Cosmetic

ABSTRACT

Provided is a cosmetic including silicone microparticles, in which the silicone microparticles include 100 parts by mass of silicone elastomer spherical microparticles having a volume average particle diameter within a range from 0.1 to 100 μm, and 0.5 to 25 parts by mass of a polyorganosilsesquioxane that coats a surface of the silicone elastomer spherical microparticles, and the silicone elastomer is capable of absorbing not less than 30 parts by mass of at least one oily substance selected from the group consisting of sebum, hydrocarbon oils and ester oils per 100 parts by mass of the silicone elastomer. Even if containing an unctuous agent, the cosmetic exhibits favorable feelings upon use, with no spreading difficulties, stickiness, greasiness, oily film feeling, or the like, and is also capable of suppressing problems caused by sebum, namely, changes in the makeup cosmetic properties of the cosmetic, changes in the color of the cosmetic, increased shine, and the like.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a cosmetic.

2. Description of the Prior Art

Cosmetics containing oily components (unctuous agents) such as hydrocarbon oils, higher alcohols, ethers, ester oils, glyceride oils, natural plant oils, fluorine-containing unctuous agents, ultraviolet absorbers, lipophilic surfactants, silicone oils, silicone resins, silicone waxes and oily gelling agents have conventionally been used for the purposes of obtaining a protection effect, softening effect, smoothing effect and moisturizing effect and the like on the skin. However, these types of cosmetics suffer from drawbacks, including spreading difficulties, stickiness, greasiness and an oily film feeling. For example, Patent Documents 1 and 2 propose cosmetics containing a composition composed of an unctuous agent and a cross-linked organopolysiloxane obtained by performing an addition polymerization between an organohydrogenpolysiloxane and an organopolysiloxane. These cosmetics are able to largely address the drawbacks listed above, but there are problems in that, if the unctuous agent volatilizes during application to the skin, the cosmetics become difficult to spread and the silkiness then deteriorates.

In addition, there are problems in that, following application to the skin, makeup cosmetics change their cosmetic properties over time as a result of the sebum secreted from the skin. In other words, the cosmetics lose their adhesion to the area of skin to which they have been applied as a result of the sebum, and become more readily transferable to other areas of the skin or clothing upon contact with such other areas of the skin or clothing. Further, sebum tends to change the color of the cosmetics, and also causes an increase in the shine of the cosmetics. Accordingly, for example, Patent Document 3 proposes to mix sebum-absorbing powders into makeup cosmetics. However, the sebum remains adsorbed to the surface of these powders, or to become absorbed in the spaces between powders, and because the sebum is not absorbed into the interior of the powders, the amount of sebum absorbed by the powders is not large, meaning that the effect of the powders in preventing discoloration or shine of the cosmetics is inadequate.

Patent Document 1: U.S. Pat. No. 4,970,252

Patent Document 2: US 2004/0234477 A1

Patent Document 3: WO 97/04737 A1

SUMMARY OF THE INVENTION

The present invention has an object of providing a cosmetic which, even if containing an unctuous agent, exhibits favorable feelings upon use, with no spreading difficulties, stickiness, greasiness, oily film feeling, or the like, and which is also capable of suppressing problems caused by sebum, namely, changes in the makeup cosmetic properties of the cosmetic, changes in the color of the cosmetic, increased shine, and the like.

As a result of intensive investigation aimed at achieving the above object, the inventors of the present invention discovered that the above object could be achieved by using the cosmetic described below, and the inventors were therefore able to complete the present invention.

In other words, the present invention provides:

a cosmetic comprising silicone microparticles, wherein

the silicone microparticles comprise 100 parts by mass of silicone elastomer spherical microparticles having a volume average particle diameter within a range from 0.1 to 100 μm, and 0.5 to 25 parts by mass of a polyorganosilsesquioxane that coats the surface of the silicone elastomer spherical microparticles, and

the silicone elastomer is capable of absorbing not less than 30 parts by mass of at least one oily substance selected from the group consisting of sebum, hydrocarbon oils and ester oils per 100 parts by mass of the silicone elastomer.

Even if containing an unctuous agent, the cosmetic of the present invention exhibits favorable feelings upon use, with no spreading difficulties, stickiness, greasiness, oily film feeling, or the like, and is also capable of suppressing problems caused by sebum, namely, changes in the makeup cosmetic properties of the cosmetic, changes in the color of the cosmetic, increased shine, and the like.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

A more detailed description of the present invention is provided below, where viscosity values refer to kinetic viscosity values measured at 25° C. using an Ostwald viscometer.

The cosmetic of the present invention is characterized by comprising the silicone microparticles described above. The cosmetic is applicable to a variety of cosmetics, but is particularly preferable for cosmetics applied externally to the skin such as skincare cosmetics, makeup cosmetics, antiperspirants and ultraviolet protection cosmetics, and cosmetics applied externally to the hair such as hair cosmetics. Examples of the skincare cosmetics include cosmetic washes, lotions, creams, cleansing materials, packs, oil liquids, massage formulations, beauty lotions, beauty oils, cleansing agents, deodorants, hand creams, lip creams and wrinkle concealers. Examples of the makeup cosmetics include makeup foundations, concealers, whitening powders, powder foundations, liquid foundations, cream foundations, oily foundations, blushers, eye colorants, eye shadows, mascaras, eye liners, eyebrow materials and lipsticks. Examples of the antiperspirants include roll-on type, cream type, solution type and stick type antiperspirants. Examples of the ultraviolet protection cosmetics include sunblock oils, sunblock lotions and sunblock creams. Examples of the hair cosmetics include shampoos, rinses, treatments and setting agents.

The form of the cosmetic of the present invention may be any of a powder, oily liquid, water-in-oil emulsion, oil-in-water emulsion, non-aqueous emulsion, or a multi-emulsion of a W/O/W type, 0/W/0 type, or the like. Further, the physical state of the cosmetic of the present invention may be selected from a variety of physical states such as a liquid, emulsion, cream, solid, paste, gel, powder, pressed state, multilayered state, mousse, spray, stick, pencil, or the like.

[Silicone Microparticles]

As mentioned above, the silicone microparticles used in the present invention comprise 100 parts by mass of silicone elastomer spherical microparticles having a volume average particle diameter within a range from 0.1 to 100 μm, and 0.5 to 25 parts by mass of a polyorganosilsesquioxane that coats the surface of the silicone elastomer spherical microparticles, where the silicone elastomer is capable of absorbing not less than 30 parts by mass of at least one oily substance selected from the group consisting of sebum, hydrocarbon oils and ester oils per 100 parts by mass of the silicone elastomer. The silicone microparticles may employ either a single type of microparticle or a combination of two or more different types. In the cosmetic of the present invention, there are no particular restrictions on the blend amount or the combination of the silicone microparticles. It is preferable that the blend amount of the silicone microparticles is appropriately selected within a range from 0.1 to 95.0% by mass of the entire cosmetic in accordance with the form, physical state, and the like of the product cosmetic.

(Silicone Elastomer Spherical Microparticles)

In the silicone microparticles described above, the silicone elastomer spherical microparticles that are surface-coated with a polyorganosilsesquioxane have a volume average particle diameter that is within a range from 0.1 to 100 μm, and preferably from 1 to 40 μm. If this volume average particle diameter is less than 0.1 μm, then the resulting silicone microparticles may be less likely to exhibit the silkiness and smoothness. If the volume average particle diameter exceeds 100 μm, then the silkiness and smoothness of the resulting silicone microparticles tends to deteriorate, and a feeling of grittiness may also develop. The volume average particle diameter is measured using a Coulter counter method. Further, in this description, the term “spherical” means that microparticles have not only a perfectly spherical shape but also deformed spherical shapes in which (length of longest axis)/(length of shortest axis) (the aspect ratio) is typically within a range from 1 to 4, preferably from 1 to 2, more preferably from 1 to 1.6, and still more preferably from 1 to 1.4, on average. The shapes of the microparticles can be confirmed by inspecting the microparticles under an optical microscope, an electron microscope, and the like.

The silicone elastomer that constitutes the silicone elastomer spherical microparticles preferably exhibits no stickiness, and preferably has a rubber hardness, measured using an Asker C hardness meter prescribed in the Society of Rubber Industry, Japan Standard (SRIS) 0101, that is within a range from 10 to 95, and more preferably from 20 to 85. Provided the rubber hardness is within a range from 10 to 95, cohesion of the obtained silicone microparticles can be adequately suppressed, and the microparticles tend to be rich in flowability, dispersibility, feelings of silkiness, smoothness, and softness.

The silicone elastomer described above is capable of absorbing not less than 30 parts by mass, and preferably at least 40 parts by mass, of at least one oily substance selected from the group consisting of sebum, hydrocarbon oils and ester oils per 100 parts by mass of the silicone elastomer. If the amount of the oily substance absorbed is less than 30 parts by mass, then the effects of the obtained silicone microparticles in suppressing changes in the properties of make-up cosmetics, and suppressing the greasiness, stickiness, and oily film feeling of cosmetics containing at least one of liquid oils consisting of hydrocarbon oils and ester oils tend to weaken. The greater the amount of oily substance absorbed the better, and therefore there are no particular limitations on the upper limit for the absorption amount, although for practical reasons, the absorption amount may be, for example, not more than 500 parts by mass, and particularly not more than 300 parts by mass.

The hydrocarbon oils and ester oils herein that represent oily substances other than sebum are used as raw materials in some cosmetic products. Examples of the hydrocarbon oils include linear and branched hydrocarbon oils, and the hydrocarbon oils may be volatile hydrocarbon oils or non-volatile hydrocarbon oils. Specific examples of the hydrocarbon oils include squalanes such as synthetic squalane and plant-based squalane, squalene, light isoparaffin, light liquid isoparaffin, liquid paraffin, liquid isoparaffin, hydrogenated polyisobutene, isododecane and isohexadecane. Specific examples of the ester oils include dioctyl succinate, diisobutyl adipate, dioctyl adipate, di(2-heptylundecyl) adipate, diisopropyl sebacate, dioctyl sebacate, dibutyloctyl sebacate, diisostearyl malate, triethyl citrate, ethylene glycol dioctanoate, neopentyl glycol dioctanoate, propylene glycol dicaprate, neopentyl glycol dicaprate, trimethylolpropane trioctanoate, trimethylolpropane triisostearate, pentaerythritol tetraoleate, ethyl acetate, butyl acetate, amyl acetate, octyldodecyl neopentanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, isopropyl myristate, isocetyl myristate, octyldodecyl myristate, isopropyl palmitate, octyl palmitate, isocetyl palmitate, isostearyl palmitate, hexyldecyl stearate, isopropyl isostearate, isocetyl isostearate, decyl oleate, oleyl oleate, octyldodecyl oleate, ethyl linoleate, isopropyl linoleate, cetyl lactate, myristyl lactate, dioctyldodecyl lauroyl glutamate and isopropyl lauroyl sarcosinate.

The silicone elastomer is preferably a cured product of a liquid silicone composition comprising:

(A)

(A1) an organohydrogenpolysiloxane having two hydrogen atoms bonded to silicon atoms within each molecule, represented by an average composition formula (1) shown below:

R¹ _(a)H_(b)SiO_((4-a-b)/2)  (1)

wherein R¹ represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 30 carbon atoms excluding aliphatic unsaturated groups, and a and b are positive numbers that satisfy 0<a<3, 0<b≦3, and 0.1≦a+b≦3,

(A2) an organohydrogenpolysiloxane represented by the average composition formula (1) and having at least three hydrogen atoms bonded to silicon atoms within each molecule, or

a combination of component (A1) and component (A2),

(B)

(B1) an organopolysiloxane having two monovalent olefinic unsaturated groups within each molecule, represented by an average composition formula (2) shown below:

R² _(c)R³ _(d)SiO_((4-c-d)/2)  (2)

wherein R² represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 30 carbon atoms excluding aliphatic unsaturated groups, R³ represents a monovalent olefinic unsaturated group of 2 to 6 carbon atoms, and c and d are positive numbers that satisfy 0<c<3, 0<d≦3, and 0.1≦c+d≦3,

(B2) an organopolysiloxane represented by the average composition formula (2) and having at least three monovalent olefinic unsaturated groups within each molecule, or

a combination of component (B1) and component (B2),

in an amount that yields from 0.5 to 2 monovalent olefinic unsaturated groups within component (B) per hydrogen atom bonded to a silicon atom within component (A), and

(C) a platinum group metal-based catalyst, wherein

from 5 to 70 mol % of at least one of R¹ and R² are monovalent hydrocarbon groups of 6 to 30 carbon atoms, provided that when component (A) is component (A1), component (B) is either component (B2) or a combination of component (B1) and component (B2).

Component (A)

The component (A) is an organohydrogenpolysiloxane represented by the above average composition formula (1) which comprises hydrogen atoms bonded to silicon atoms (hereafter also referred to as “SiH groups”) within each molecule. The component (A) may be either the component (A1), the component (A2), or a combination of the component (A1) and the component (A2). The component (A1) and the component (A2) may each employ either a single compound or a combination of two or more compounds.

Preferably, a and b are positive numbers that satisfy 0<a≦2.295, 0.005≦b≦2.3, and 0.5≦a+b≦2.3.

The number of carbon atoms within R¹ is typically within a range from 1 to 30, and is preferably from 1 to 22, and more preferably from 1 to 18. Specific examples of R¹ include alkyl groups such as a methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, decyl group, undecyl group, dodecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, icosyl group, henicosyl group, docosyl group, tricosyl group, tetracosyl group or triacontyl group; aryl groups such as a phenyl group, tolyl group or naphthyl group; aralkyl groups such as a benzyl group or phenethyl group; cycloalkyl groups such as a cyclopentyl group, cyclohexyl group or cycloheptyl group; and monovalent hydrocarbon groups in which some or all of the hydrogen atoms bonded to carbon atoms in any of the above groups have been substituted with either one or both of an atom such as a halogen atom (such as a fluorine atom, chlorine atom, bromine atom or iodine atom), and a substituent such as an acryloyloxy group, methacryloyloxy group, epoxy group, glycidoxy group or carboxyl group.

The viscosity of the organohydrogenpolysiloxane of component (A) is preferably not more than 100,000 mm²/s, and is more preferably 10,000 mm²/s or less. Provided this viscosity is not more than 100,000 mm²/s, the production method described below can be used to particularly easily generate silicone microparticles having a narrow particle size distribution. Although there are no particular limitations on the lower limit for the viscosity, for practical reasons the viscosity may be, for example, at least 0.4 mm²/s, and particularly 2 mm²/s or greater. Furthermore, although the structure of the organohydrogenpolysiloxane of the component (A) may be a linear, cyclic or branched structure, a linear structure is particularly desirable.

Component (B)

The component (B) is an organopolysiloxane represented by the above average composition formula (2) which comprises monovalent olefinic unsaturated groups within each molecule. The component (B) may be either the component (B1), the component (B2), or a combination of the component (B1) and the component (B2). The component (B1) and the component (B2) may each employ either a single compound or a combination of two or more compounds.

Preferably, c and d are positive numbers that satisfy 0<c≦2.295, 0.005≦d≦2.3, and 0.5≦c+d≦2.3.

The number of carbon atoms within R² is typically within a range from 1 to 30, and is preferably from 1 to 22, and more preferably from 1 to 18. Specific examples of R² include the same groups as those exemplified above for R¹. As mentioned above, from 5 to 70 mol % of at least one of R¹ and R² represent monovalent hydrocarbon groups of 6 to 30 carbon atoms, and from 8 to 60 mol % preferably represent monovalent hydrocarbon groups of 6 to 30 carbon atoms. If this proportion of monovalent hydrocarbon groups of 6 to 30 carbon atoms is less than 5 mol %, then the absorption amount of the above oily substances tends to decrease. In contrast, if the proportion exceeds 70 mol %, then the reactivity of the organohydrogenpolysiloxane of component (A) and the olefinic unsaturated group-containing organopolysiloxane of component (B) tends to deteriorate, and the rubber hardness of the resulting cured product tends to decrease. From the viewpoint of reactivity, when 5 to 70 mol % of at least one of R¹ and R² represent monovalent hydrocarbon groups of 6 to 30 carbon atoms, the remaining 30 to 95 mol % of the at least one of R¹ and R² preferably represent methyl groups, and when 8 to 60 mol % of at least one of R¹ and R² represent monovalent hydrocarbon groups of 6 to 30 carbon atoms, the remaining 40 to 92 mol % of the at least one of R¹ and R² preferably represent methyl groups.

The number of carbon atoms with R³ is typically from 2 to 6. Specific examples of R³ include a vinyl group, allyl group, propenyl group, butenyl group, pentenyl group or hexenyl group. From an industrial perspective, a vinyl group is preferred.

The viscosity of the olefinic unsaturated group-containing organopolysiloxane of component (B) is preferably not more than 100,000 mm²/s, and is more preferably 10,000 mm²/s or less. Provided this viscosity is not more than 100,000 mm²/s, the production method described below can be used to particularly easily generate silicone microparticles having a narrow particle size distribution. Although there are no particular limitations on the lower limit for the viscosity, for practical reasons the viscosity may be, for example, at least 0.7 mm²/s, and particularly 2 mm²/s or greater. Furthermore, although the structure of the olefinic unsaturated group-containing organopolysiloxane of the component (B) may be a linear, cyclic or branched structure, a linear structure is particularly desirable.

When the component (A) is component (A1), the component (B) is either component (B2) or a combination of component (B1) and component (B2). In other words, the combination where the component (A) is component (A1) and the component (B) is component (B1) is excluded from the combinations of component (A) and component (B) used for obtaining the silicone elastomer described above. This is because the elastomer cured product obtained from this combination tends to be prone to developing stickiness.

As mentioned above, the blend amount of the component (B) yields from 0.5 to 2 monovalent olefinic unsaturated groups within component (B) per SiH group within component (A), and this number of monovalent olefinic unsaturated groups is preferably from 0.7 to 1.5. If an amount of the component (B) that yields fewer than 0.5 or more than 2 monovalent olefinic unsaturated groups is added to the liquid silicone composition, then the resulting elastomer cured product tends to develop stickiness, and also tends to exhibit reaction activity that is overly high.

Component (C)

The platinum group metal-based catalyst of the component (C) is a catalyst that promotes the addition reaction between the SiH groups within the component (A) and the monovalent olefinic unsaturated groups within the component (B). The component (C) may use either a single catalyst or a combination of two or more different catalysts.

Any of the conventional catalysts used in hydrosilylation reactions may be used as the component (C), and specific examples include platinum group metals such as platinum (including platinum black), rhodium and palladium; platinum chlorides, chloroplatinic acids and chloroplatinates such as H₂PtCl₄.kH₂O, H₂PtCl₆.kH₂O, NaHPtCl₆.H₂O, KHPtCl₆.H₂O, Na₂PtCl₆.H₂O, K₂PtCl₄.kH₂O, PtCl₄.H₂O, PtCl₂ and Na₂HPtCl₄.kH₂O (wherein, k represents an integer of 0 to 6, and is preferably either 0 or 6); alcohol-modified chloroplatinic acid (see U.S. Pat. No. 3,220,972); complexes of chloroplatinic acid and olefins (see U.S. Pat. No. 3,159,601, U.S. Pat. No. 3,159,662 and U.S. Pat. No. 3,775,452); a platinum group metal such as platinum black or palladium supported on a carrier such as alumina, silica or carbon; rhodium-olefin complexes; chlorotris(triphenylphosphine)rhodium (Wilkinson's catalyst); and complexes of a platinum chloride, a chloroplatinic acid or a chloroplatinate with a vinyl group-containing siloxane and particularly a vinyl group-containing cyclic siloxane.

The blend amount of the component (C) need only be sufficient to function as an effective hydrosilylation reaction catalyst, and the mass of the platinum group metal within the component (C) relative to the total mass of the composition, is typically within a range from 0.1 to 500 ppm, and is preferably from 0.5 to 200 ppm, and more preferably from 1 to 100 ppm.

Method of Producing Silicone Elastomer Spherical Microparticles

The silicone elastomer spherical microparticles can be produced in the form of a water dispersion using conventional methods. One possible method involves adding a surfactant and water to a mixed solution of an organohydrogenpolysiloxane and an olefinic unsaturated group-containing organopolysiloxane, performing an emulsification to generate an emulsion, and then adding a platinum group metal-based catalyst to initiate an addition reaction.

In this method, an example of the organohydrogenpolysiloxane is the component (A) described above, an example of the olefinic unsaturated group-containing organopolysiloxane is the component (B), and an example of the platinum group metal-based catalyst is the component (C).

Further, there are no particular restrictions on the surfactant, and examples include nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyethylene glycol aliphatic acid esters, sorbitan aliphatic acid esters, polyoxyethylene sorbitan aliphatic acid esters, polyoxyethylene sorbitol aliphatic acid esters, glycerol aliphatic acid esters, polyoxyethylene glycerol aliphatic acid esters, polyglycerol aliphatic acid esters, propylene glycol aliphatic acid esters, polyoxyethylene castor oils, polyoxyethylene hardened castor oils, polyoxyethylene hardened castor oil aliphatic acid esters, polyoxyethylene alkylamines, polyoxyethylene aliphatic acid amides, polyoxyethylene-modified organopolysiloxanes, and polyoxyethylene polyoxypropylene-modified organopolysiloxanes; anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkylphenyl ether sulfates, N-acyltaurinates, alkylbenzene sulfonates, polyoxyethylene alkylphenyl ether sulfonates, α-olefin sulfonates, alkylnaphthalene sulfonates, alkyl diphenyl ether disulfonates, dialkyl sulfosuccinates, monoalkyl sulfosuccinates, polyoxyethylene alkyl ether sulfosuccinates, aliphatic acid salts, polyoxyethylene alkyl ether acetates, N-acylamino acid salts, alkenylsuccinates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, polystyrene sulfonates, formalin condensates of naphthalene sulfonic acid, formalin condensates of aromatic sulfonic acids, carboxylic acid polymers, and styrene oxyalkylene acid anhydride copolymers; cationic surfactants such as alkyltrimethylammonium salts, dialkyldimethylammonium salts, polyoxyethylene alkyldimethylammonium salts, dipolyoxyethylene alkylmethylammonium salts, tripolyoxyethylene alkylammonium salts, alkylbenzyldimethylammonium salts, alkylpyridinium salts, monoalkylamine salts, monoalkylamide amine salts, and cationized cellulose; and amphoteric surfactants such as alkyl dimethylamine oxides, alkyl dimethylcarboxybetaines, alkylamide propyl dimethylcarboxybetaines, alkyl hydroxysulfobetaines, and alkylcarboxymethyl hydroxyethyl imidazolinium betaines. These surfactants may be used individually, or two or more different surfactants may be used in combination. An anionic surfactant and a cationic surfactant may not be used in combination.

The emulsification can be performed using a typical emulsification disperser, examples of which include high-speed rotational centrifugal radial stirrers such as a homodisper, high-speed rotational shearing stirrers such as a homomixer, high-pressure injection-type emulsification dispersers such as a homogenizer, colloid mills, and ultrasonic emulsifiers.

In those cases where the platinum group metal-based catalyst exhibits poor dispersibility within water, the catalyst is preferably dissolved in a surfactant prior to addition to the emulsion. Examples of this surfactant include the same surfactants as those exemplified above.

The addition reaction may be conducted at room temperature, although in those cases where the reaction does not proceed to completion at room temperature, the reaction may be conducted under heating at a temperature of less than 100° C.

(Polyorganosilsesquioxane)

The silicone microparticles used in the present invention are those in which silicone elastomer spherical microparticles have been surface-coated with a polyorganosilsesquioxane, and the amount of the polyorganosilsesquioxane is typically within a range from 0.5 to 25 parts by mass, and preferably from 1 to 15 parts by mass, per 100 parts by mass of the silicone elastomer spherical microparticles described above. If the amount of the polyorganosilsesquioxane is less than 0.5 parts by mass, then the resulting silicone microparticles tend to exhibit powerful cohesiveness, and the flowability, dispersibility, silkiness and smoothness of the microparticles tend to deteriorate. In contrast, if the amount of the polyorganosilsesquioxane exceeds 25 parts by mass, then the resulting silicone microparticles tend to lose their feeling of softness, and the absorption amounts of sebum and liquid oils such as hydrocarbon oils and ester oils tend to decrease.

In the silicone microparticles used in the present invention, the surface of the silicone elastomer spherical microparticles is not coated with the polyorganosilsesquioxane in such a manner that leaves absolutely no gaps in the coating. If the coating is formed with absolutely no gaps, then the silicone elastomer spherical microparticles are no longer able to absorb sebum and oily components including liquid oils. By using the production method outlined below, surface-coated silicone microparticles can be obtained in which the surface coating includes gaps that are sufficient to allow passage of sebum and the oily components. Such silicone microparticles are able to absorb at least one of sebum and the hydrocarbon oils and ester oils that together constitute liquid oils.

The polyorganosilsesquioxane preferably contains an alkyl group that is substituted with an unsubstituted or substituted amino group.

Examples of the polyorganosilsesquioxane include polymers comprising units represented by the formula R⁴SiO_(3/2) (wherein R⁴ represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 20 carbon atoms, and preferably 1 to 6 carbon atoms). Specific examples of R⁴ include alkyl groups such as a methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, decyl group, undecyl group, dodecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group or icosyl group; alkenyl groups such as a vinyl group or allyl group; aryl groups such as a phenyl group, tolyl group or naphthyl group; aralkyl groups such as a benzyl group or phenethyl group; cycloalkyl groups such as a cyclopentyl group, cyclohexyl group or cycloheptyl group; and monovalent hydrocarbon groups in which some or all of the hydrogen atoms bonded to carbon atoms in any of the above groups have been substituted with either one or both of an atom such as a halogen atom (such as a fluorine atom, chlorine atom, bromine atom or iodine atom) and a substituent such as an unsubstituted or substituted amino group, acryloyloxy group, methacryloyloxy group, epoxy group, glycidoxy group, mercapto group or carboxyl group.

Examples of the substituted amino group mentioned above include amino groups that have been substituted with an unsubstituted or substituted monovalent hydrocarbon group of 1 to 20 carbon atoms, and preferably 1 to 6 carbon atoms. Here, examples of the unsubstituted or substituted monovalent hydrocarbon group of 1 to 20 carbon atoms include the same monovalent hydrocarbon groups as those exemplified above for R⁴. Specific examples of the substituted amino group include the groups listed below.

—NHC₂H₄NH₂, —(NHC₂H₄)₂NH₂, —(NHC₂H₄)₃NH₂, —NHCH₃, —NHC₂H₄NHCH₃, —NHC₆H₅, and —NHCH₂C₆H₅

In order to obtain silicone microparticles used in the present invention using the production method described below, not less than 50 mol % (50 to 100 mol %), and particularly 80 mol % or more (80 to 100 mol %) of all the R⁴ groups within the polyorganosilsesquioxane are preferably methyl groups. Furthermore, the polyorganosilsesquioxane preferably contains alkyl groups that are substituted with unsubstituted or substituted amino groups, and not more than 20 mol % (0 to 20 mol %), and particularly 0.5 to 10 mol % of all the R⁴ groups are preferably alkyl groups that are substituted with unsubstituted or substituted amino groups. Particularly, in those cases where the R⁴ groups consist of methyl groups and alkyl groups that are substituted with unsubstituted or substituted amino groups (provided the total thereof is 100 mol %), not less than 80 mol % (80 to 100 mol %) of all the R⁴ groups are preferably methyl groups, and not more than 20 mol % (0 to 20 mol %) of all the R⁴ groups are preferably alkyl groups that are substituted with unsubstituted or substituted amino groups. In the same cases, 90 to 99.5 mol % of all the R⁴ groups are more preferably methyl groups, and 0.5 to 10 mol % of all the R⁴ groups are more preferably alkyl groups that are substituted with unsubstituted or substituted amino groups.

Examples of the alkyl groups that are substituted with unsubstituted or substituted amino groups are shown below, although the following is in no way an exhaustive list.

—CH₂NH₂, —C₃H₆NH₂, —C₃H₆NHC₂H₄NH₂, —C₃H₆(NHC₂H₄)₂NH₂, —C₃H₆(NHC₂H₄)₃NH₂, —C₃H₆NHCH₃, —C₃H₆NHC₂H₄NHCH₃, —C₃H₆NHC₆H₅, and —C₃H₆NHCH₂C₆H₅

Furthermore, the polyorganosilsesquioxane may also include, besides the R⁴SiO₃₁₂ units, at least one type of unit selected from among R⁴ ₂SiO_(2/2) units, R⁴ ₃SiO_(1/2) units and SiO_(4/2) units (wherein R⁴ is as defined above), provided the inclusion of this other type of unit does not impair the favorable feelings during use of the obtained silicone microparticles, such as feelings of silkiness or smoothness, nor impair the other properties of the silicone microparticles such as the soft feeling, the lack of cohesiveness, and the dispersibility. In this type of polyorganosilsesquioxane, the proportion of R⁴SiO_(3/2) units within the total number of all siloxane units is preferably within a range from 70 to 100 mol %, and is more preferably from 80 to 100 mol %.

(Production Method)

The coating of particle surfaces with another material belongs to the field of particle complexing techniques, and there are many methods therefor. When preparing the silicone microparticles used in the present invention, any conventional coating treatment method can be used, provided the effects of the resulting microparticles, namely the ability to provide favorable feelings during use and prevent shine and the like, are not impaired. Examples of these conventional methods include methods in which particles that act as the core (hereafter referred to as “core particles”) and particles that are used for coating the surface of the core particles (hereafter referred to as “coating material particles”) are subjected to dry mixing, thereby adhering the coating material particles to the surface of the core particles, and methods in which the mixed particles are subjected to processing that imparts an impact force, a compressive force, a frictional force or a shearing force or the like to the particles, thereby fixing the coating material particles to the surface of the core particles or forming a film of the coating particles in a physical, chemical or mechanochemical manner. However, because the silicone elastomer particles that act as the core particles exhibit powerful cohesion, adhering a uniform thin film of coating material particles to the surface of the silicone elastomer particles by dry mixing is problematic. Further, in those cases where the silicone elastomer particles exhibit a high degree of elasticity, the coating material particles may not be able to be satisfactorily fixed to the surface of the silicone elastomer particles even if an impact force, a compressive force, a frictional force or a shearing force or the like is applied to the particles. Moreover, another method exists that involves producing the coated particles by spray drying a dispersion of the core particles and the coating material particles, but this method tends to also produce aggregated particles if the concentration of the discharged liquid is too high. Accordingly, it is preferable in the present invention to use, in addition to the above method, such a method wherein the coating material particles are fixed physicochemically to the surface of the core particles within a dispersion of the core particles, as is disclosed in Japanese Laid-open publication (kokai) No. Hei 07-196815. Moreover, in order to reduce the variations in the chemical composition and the shape within the resulting silicone microparticles, using the method disclosed in Japanese Laid-open publication (kokai) No. Hei 7-196815 is most desirable.

A method of preparing the silicone microparticles used in the present invention is detailed below in accordance with the method disclosed in Japanese Laid-open publication (kokai) No. Hei 07-196815. In other words, the silicone microparticles are preferably obtained by hydrolyzing and condensing an organotrialkoxysilane in a water medium, in the presence of the aforementioned silicone elastomer spherical microparticles having a volume average particle diameter within a range from 0.1 to 100 μm and an alkaline material, thereby coating the surface of the silicone elastomer spherical microparticles with a polyorganosilsesquioxane. The water medium, the silicone elastomer spherical microparticles, the alkaline material and the organotrialkoxysilane may be either added simultaneously or added at different times, although from the viewpoint of reactivity, the organotrialkoxysilane is preferably added to a water dispersion of the silicone elastomer spherical microparticles to which the alkaline material has been added. Furthermore, a method is also preferred in which the water medium and the organotrialkoxysilane are first mixed together to hydrolyze the organotrialkoxysilane, a water dispersion of the silicone elastomer spherical microparticles is then added, and the alkaline material is then added to effect the condensation reaction.

The alkaline material functions as a catalyst for the hydrolysis-condensation reaction of the organotrialkoxysilane. The alkaline material may be either a single material or a combination of two or more different materials. The alkaline material may be either added as is, or added in the form of an alkaline aqueous solution. The amount added of the alkaline material is adjusted so that the pH of the water dispersion of the silicone elastomer spherical microparticles containing the alkaline material is preferably within a range from 10.0 to 13.0, and more preferably from 10.5 to 12.5. Provided the amount of the alkaline material yields a pH within a range from 10.0 to 13.0, the hydrolysis-condensation reaction of the organotrialkoxysilane, and the coating of the surface of the silicone elastomer spherical microparticles by the polyorganosilsesquioxane both proceed favorably.

There are no particular restrictions on the alkaline material, and examples that may be used include alkali metal hydroxides such as potassium hydroxide, sodium hydroxide and lithium hydroxide; alkaline earth metal hydroxides such as calcium hydroxide and barium hydroxide; alkali metal carbonates such as potassium carbonate and sodium carbonate; ammonia; tetraalkylammonium hydroxides such as tetramethylammonium hydroxide and tetraethylammonium hydroxide; and amines such as monomethylamine, monoethylamine, monopropylamine, monobutylamine, monopentylamine, dimethylamine, diethylamine, trimethylamine, triethanolamine and ethylenediamine. Of these, ammonia is the most desirable as it can be readily removed from the powder of the resulting silicone microparticles by volatilization. Commercially available aqueous solutions of ammonia may be used as the ammonia.

Examples of the organotrialkoxysilane include compounds represented by a formula: R⁴Si(OR⁵)₃ (wherein R⁴ is as defined above, and R⁵ represents an unsubstituted monovalent hydrocarbon group of 1 to 6 carbon atoms). Specific examples of R⁵ include a methyl group, ethyl group, propyl group, butyl group, pentyl group or hexyl group, although in terms of reactivity, a methyl group is preferred. In those cases where it is desirable to introduce at least one type of other unit selected from among R⁴ ₂SiO_(2/2) units, R⁴ ₃SiO_(1/2) units and SiO_(4/2) units into the polyorganosilsesquioxane, at least one of the corresponding compounds, namely at least one of R⁴ ₂Si(OR⁵)₂, R⁴ ₃SiOR⁵ and Si(OR⁵)₄, respectively, may also be added. (In the above formulas, R⁴ and R⁵ are as defined above). In those cases where R⁴Si(OR⁵)₃, and at least one of R⁴ ₂Si(OR⁵)₂, R⁴ ₃SiOR⁵ and Si(OR⁵)₄ (wherein R⁴ and R⁵ are as defined above) are used as the raw materials for the polyorganosilsesquioxane, the proportion of the R⁴Si(OR⁵)₃ within the combined total of all the raw materials is preferably within a range from 70 to 100 mol %, and is more preferably from 80 to 100 mol %.

The amount added of the organotrialkoxysilane is adjusted so that the amount of the polyorganosilsesquioxane is typically within a range from 0.5 to 25 parts by mass, and preferably from 1 to 15 parts by mass, per 100 parts by mass of the silicone elastomer spherical microparticles.

Addition of the organotrialkoxysilane is preferably conducted under stirring using a typical stirring device such as a propeller blade or a flat blade or the like. The organotrialkoxysilane may be added in a single batch, but is preferably added gradually over a period of time in the case of a method in which the condensation reaction with the alkaline material is allowed to proceed while the organotrialkoxysilane is added. In the case where the hydrolysis reaction of the organotrialkoxysilane is performed first, and the alkaline material is then added to effect the condensation reaction, the alkaline material is preferably added and dissolved uniformly, and the stirring then halted and the reaction mixture left to stand until the condensation reaction has proceeded and the surface of the silicone elastomer spherical microparticles has been coated with the polyorganosilsesquioxane. Further, the temperature during these times is preferably within a range from 0 to 60° C., and is more preferably from 0 to 40° C. Provided this temperature is within a range from 0 to 60° C., the surface of the silicone elastomer spherical microparticles can be coated with the polyorganosilsesquioxane in a more favorable state.

After the surface of the silicone elastomer spherical microparticles has been coated with the polyorganosilsesquioxane, the reaction mixture may be heated at a temperature of approximately 40 to 100° C. to complete the hydrolysis-condensation reaction.

Following the hydrolysis-condensation reaction, water is removed from the water dispersion of the obtained silicone microparticles. This removal of the water is performed, for example, by heating the water dispersion at normal pressure or under reduced pressure following completion of the reaction, and more specific examples include a method in which the water is removed by leaving the dispersion to stand under heat, a method in which the water is removed while the dispersion is stirred and flowed under heat, a method in which the dispersion is sprayed and dispersed in a hot air stream such as by use of a spray drier, and methods that employ a fluid heating medium. Prior to this water removal operation, a pretreatment may be used to concentrate the dispersion using a method such as thermal dehydration, separation by filtration, centrifugal separation, or decantation. Moreover, if necessary, the dispersion may be washed with water.

In those cases where the product obtained upon removal of the water from the dispersion following reaction is an aggregate, the silicone microparticles can be obtained by crushing the product using a crushing device such as a jet mill, ball mill or hammer mill.

[Cosmetically Acceptable Oily Component]

The cosmetic of the present invention may include any of a variety of components used in typical cosmetics, provided the effects of the present invention are not impaired, and particularly preferably includes a cosmetically acceptable oily component. This oily component may employ a single component, or two or more components may be used in combination.

The oily component may be any of a solid, a semi-solid and a liquid. Examples that may be used as the oily component include hydrocarbon oils, higher alcohols, ethers, ester oils, glyceride oils, natural plant oils, fluorine-containing unctuous agents, ultraviolet absorbers, lipophilic surfactants, silicone oils, silicone resins, silicone waxes and oily gelling agents.

Examples of the hydrocarbon oils include linear and branched hydrocarbon oils, and include both volatile hydrocarbon oils and non-volatile hydrocarbon oils. Specific examples of these hydrocarbon oils include synthetic squalane, plant-based squalane, squalene, liquid isoparaffin, light isoparaffin, hydrogenated polyisobutene, isododecane, light liquid isoparaffin, isohexadecane, liquid paraffin, pristane, α-olefin oligomers, ozokerite, ceresin, paraffin, paraffin wax, polyethylene wax, polyethylene-polypropylene wax, (ethylene-propylene-styrene) copolymers, (butylene-propylene-styrene) copolymers, polyisobutylene, microcrystalline wax and Vaseline.

Examples of the higher alcohols include alcohols in which the number of carbon atoms is preferably at least 6, and more preferably within a range from 10 to 30. Specific examples of these higher alcohols include lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyldodecanol, octyldodecanol, cetostearyl alcohol, 2-decyltetradecynol, cholesterol, phytosterol, polyoxyethylene cholesterol ether, monostearyl glycerol ether (batyl alcohol), and monooleyl glyceryl ether (selachyl alcohol).

Examples of the ethers include monoalkyl and dialkyl ethers of ethylene glycol, diethylene glycol and triethylene glycol, monoalkyl and dialkyl ethers of butylene glycol, propylene glycol, dipropylene glycol, pentylene glycol and caprylyl glycol, monoalkyl, dialkyl and trialkyl ethers of glycerol, and alkyl ethers of isononyl alcohol, caprylyl alcohol and stearyl alcohol.

Examples of the ester oils include dioctyl succinate, diisobutyl adipate, dioctyl adipate, di(2-heptylundecyl) adipate, diisopropyl sebacate, dioctyl sebacate, dibutyloctyl sebacate, diisostearyl malate, triethyl citrate, ethylene glycol dioctanoate, neopentyl glycol dioctanoate, propylene glycol dicaprate, neopentyl glycol dicaprate, trimethylolpropane trioctanoate, trimethylolpropane triisostearate, pentaerythritol tetraoleate, ethyl acetate, butyl acetate, amyl acetate, octyldodecyl neopentanoate, cetyl octanoate, isononyl isononanoate, isotridecyl isononanoate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, isopropyl myristate, myristyl myristate, isocetyl myristate, octyldodecyl myristate, isopropyl palmitate, octyl palmitate, cetyl palmitate, isocetyl palmitate, isostearyl palmitate, butyl stearate, hexyldecyl stearate, isopropyl isostearate, isocetyl isostearate, decyl oleate, oleyl oleate, octyldodecyl oleate, ethyl linoleate, isopropyl linoleate, cetyl lactate, myristyl lactate, cholesteryl hydroxystearate, dioctyldodecyl lauroyl glutamate, isopropyl lauroyl sarcosinate, and octyldodecyl gum ester.

Examples of the glyceride oils include acetoglyceryl, glyceryl triisooctanoate, glyceryl trimyristate, glyceryl triisopalmitate, glyceryl triisostearate, glyceryl tribehenate, glyceryl diisostearate, glyceryl monostearate, diglyceryl(isostearate-myristate), and pentaerythritol fatty acid esters.

Examples of the natural plant oils include avocado oil, linseed oil, almond oil, ibota wax, perilla oil, olive oil, cacao butter, kapok wax, kaya oil, carnauba wax, liver oil, candelilla wax, refined candelilla wax, beef tallow, neat's-foot tallow, beef bone tallow, hardened beef tallow, apricot kernel oil, whale wax, hardened oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, sugarcane wax, camellia sasanqua oil, safflower oil, shea butter, Chinese tung oil, cinnamon oil, jojoba wax, squalane, squalene, shellac wax, turtle oil, soybean oil, tea berry oil, camellia oil, evening primrose oil, corn oil, lard, rapeseed oil, Japanese tung oil, bran wax, germ oil, horse tallow, persic oil, palm oil, palm kernel oil, castor oil, hardened castor oil, castor oil fatty acid methyl ester, sunflower oil, grapeseed oil, bayberry wax, jojoba oil, macadamia nut oil, beeswax, mink oil, meadowfoam oil, cottonseed oil, cotton wax, Japan wax, Japan wax kernel oil, montan wax, coconut oil, hardened coconut oil, tri(coconut oil fatty acid) glyceride, mutton tallow, peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, lanolin alcohol acetate, lanolin fatty acid isopropyl ester, polyoxyethylene lanolin alcohol ether, polyoxyethylene lanolin alcohol acetate, lanolin fatty acid polyethylene glycol, polyoxyethylene hydrogenated lanolin alcohol ether, and egg-yolk oil.

Examples of the fluorine-containing unctuous agents include perfluoropolyether, perfluorodecalin and perfluorooctane.

Examples of the ultraviolet absorbers include benzoic acid-based ultraviolet absorbers such as para-aminobenzoic acid, anthranilic acid-based ultraviolet absorbers such as methyl anthranilate, salicylic acid-based ultraviolet absorbers such as methyl salicylate, octyl salicylate and trimethylcyclohexyl salicylate, cinnamic acid-based ultraviolet absorbers such as octyl para-methoxycinnamate, benzophenone-based ultraviolet absorbers such as 2,4-dihydroxybenzophenone, urocanic acid-based ultraviolet absorbers such as ethyl urocanate, dibenzoylmethane-based ultraviolet absorbers such as 4-t-butyl-4′-methoxy-dibenzoylmethane, as well as phenylbenzimidazole sulfonic acid and triazine derivatives.

Examples of the lipophilic surfactants include nonionic, anionic, cationic and amphoteric lipophilic surfactants, and specific examples include the lipophilic surfactants amongst those surfactants that can be used in the production of the water dispersion of the silicone elastomer spherical microparticles described above. Of those surfactants, linear or branched polyoxyethylene-modified organopolysiloxanes, linear or branched polyoxyethylene/polyoxypropylene-modified organopolysiloxanes, linear or branched polyoxyethylene/alkyl-comodified organopolysiloxanes, linear or branched polyoxyethylene/polyoxypropylene/alkyl-comodified organopolysiloxanes, linear or branched polyglycerol-modified organopolysiloxanes, and linear or branched polyglycerol/alkyl-comodified organopolysiloxanes are preferred (for example, the silicone-based emulsifiers KF-6011, 6043, 6028, 6038, 6100, 6104 and 6105 and the like, manufactured by Shin-Etsu Chemical Co., Ltd.). Furthermore, polyoxyethylene-modified partially crosslinked organopolysiloxanes and polyglycerol-modified partially crosslinked organopolysiloxanes may also be used in a mixed state with other oily components (for example, the KSG series of products: KSG-210, 710, 310, 320, 330, 340, 320Z, 350Z, 810, 820, 830, 840, 820Z and 850Z and the like, manufactured by Shin-Etsu Chemical Co., Ltd.).

Examples of the silicone oils include low-viscosity to high-viscosity linear or branched organopolysiloxanes such as dimethylpolysiloxane, tristrimethylsiloxymethylsilane, caprylyl methicone, phenyl trimethicone, tetrakistrimethylsiloxysilane, methylphenylpolysiloxane, methylhexylpolysiloxane, methylhydrogenpolysiloxane and copolymers of dimethylsiloxane and methylphenylsiloxane, cyclic organopolysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogencyclotetrasiloxane and tetramethyltetraphenylcyclotetrasiloxane, amino-modified organopolysiloxanes, pyrrolidone-modified organopolysiloxanes, pyrrolidone carboxylic acid-modified organopolysiloxanes, silicone rubbers such as gum-like dimethylpolysiloxanes having high polymerization degrees, gum-like amino-modified organopolysiloxanes and gum-like copolymers of dimethylsiloxane and methylphenylsiloxane, cyclic organopolysiloxane solutions of silicone gums or silicone rubbers, trimethylsiloxysilicates and cyclic siloxane solutions of trimethylsiloxysilicates (for example, KF-7312J and the like, manufactured by Shin-Etsu Chemical Co., Ltd.), higher alkoxy-modified silicones such as stearoxysilicone, higher fatty acid-modified silicones, alkyl-modified silicones, long chain alkyl-modified silicones, amino acid-modified silicones, fluorinated silicones, and silicone resin solutions.

The silicone resin is preferably an acrylic silicone resin composed of an acrylic/silicone graft copolymer or an acrylic/silicone block copolymer or the like (for example, the product KP-545: a cyclic organopolysiloxane solution of an acrylic/silicone graft copolymer, manufactured by Shin-Etsu Chemical Co., Ltd.). Furthermore, acrylic silicone resins containing at least one portion selected from the group consisting of pyrrolidone portions, long-chain alkyl portions, polyoxyalkylene portions and anion portions such as fluoroalkyl portions and carboxylic acid portions within each molecule may also be used. Moreover, the silicone resin is preferably a silicone network-type compound formed from at least one resin selected from amongst resins composed of R⁸ ₃SiO_(0.5) units and SiO₂ units, resins composed of R⁸ ₃SiO_(0.5) units, R⁸ ₂SiO units and SiO₂ units, resins composed of R⁸ ₃SiO_(0.5) units and R⁸SiO_(1.5) units, resins composed of R⁸ ₃SiO_(0.5) units, R⁸ ₂SiO units and R⁸SiO_(1.5) units, and resins composed of R⁸ ₃SiO_(0.5) units, R⁸ ₂SiO units, R⁸SiO_(1.5) units and SiO₂ units. In these formulas, R⁸ represents a substituted or unsubstituted monovalent hydrocarbon group of 1 to 30 carbon atoms. Furthermore, a silicone network-type compound containing at least one portion selected from the group consisting of pyrrolidone portions, long-chain alkyl portions, polyoxyalkylene portions, polyglycerol portions, fluoroalkyl portions and amino portions within each molecule may also be used. In those cases where a silicone resin such as an acrylic silicone resin or silicone network-type compound is used, the blend amount is preferably within a range from 0.1 to 20% by mass, and more preferably from 1 to 10% by mass, of the entire cosmetic.

The silicone wax is preferably an acrylic silicone wax formed from an acrylic/silicone graft copolymer or an acrylic/silicone block copolymer or the like (for example, the products KP-561P, 562P and the like: cyclic organopolysiloxane solutions of an acrylic/silicone graft copolymer, manufactured by Shin-Etsu Chemical Co., Ltd.). Furthermore, acrylic silicone waxes containing at least one portion selected from the group consisting of pyrrolidone portions, long-chain alkyl portions, polyoxyalkylene portions, and anion portions such as fluoroalkyl portions and carboxylic acids within each molecule may also be used. Furthermore, this silicone wax is preferably a polylactone-modified polysiloxane having a bonded polylactone, which is a ring-opening polymerization product of a lactone compound having a 5-membered ring or higher. Moreover, the silicone wax may also be a silicone-modified olefin wax obtained by performing an addition reaction between an olefin wax having unsaturated groups formed from an α-olefin and a diene, and an organohydrogenpolysiloxane having one or more SiH bonds within each molecule. The α-olefin is preferably an α-olefin of 2 to 12 carbon atoms such as ethylene, propylene, 1-butene, 1-hexene or 4-methyl-1-pentene, and the diene is preferably butadiene, isoprene, 1,4-hexadiene, vinylnorbornene, ethylidene norbornene or dicyclopentadiene or the like. The organohydrogenpolysiloxane having one or more SiH bonds may have a linear structure or a siloxane branched structure.

Examples of the oily gelling agents include metal soaps such as aluminum stearate, magnesium stearate and zinc myristate, amino acid derivatives such as N-lauroyl-L-glutamic acid and α,γ-di-n-butylamine, dextrin fatty acid esters such as dextrin palmitic acid ester, dextrin stearic acid ester and dextrin 2-ethylhexanoic acid palmitic acid ester, sucrose fatty acid esters such as sucrose palmitic acid ester and sucrose stearic acid ester, fructooligosaccharide fatty acid esters such as fructooligosaccharide stearic acid ester and fructooligosaccharide 2-ethylhexanoic acid ester, benzylidene derivatives of sorbitol such as monobenzylidene sorbitol and dibenzylidene sorbitol, organic-modified clay minerals such as dimethylbenzyldodecylammonium montmorillonite clay and dimethyldioctadecylammonium montmorillonite clay, and gel mixtures containing a gelling component such as an unmodified or modified partially crosslinked organopolysiloxane such as an unmodified partially crosslinked organopolysiloxane, an alkyl-modified partially crosslinked organopolysiloxane or a silicone branched alkyl-modified partially crosslinked organopolysiloxane, and a variety of oil components such as cyclopentasiloxane, dimethicone, mineral oil, isododecane, trioctanoin or squalane. The above gelling component and the oil component coexist within the gel mixture. Specific examples of this type of gel mixture include the KSG series (product name), and particularly KSG-15, 16, 41, 42, 43, 44, 042Z and 045Z (all product names) manufactured by Shin-Etsu Chemical Co., Ltd.

In the cosmetic of the present invention, the blend amount of the oily component described above is preferably within a range from 1 to 98% by mass of the entire cosmetic.

[Oily Gel Composition]

As described above, the silicone microparticles used in the present invention may be included in the cosmetic of the present invention, as is, as a cosmetic component, although in order to let the cosmetic exert the desired feelings during use, it is preferable to prepare an oily gel composition containing the silicone microparticles and an aforementioned oily component separately and to prepare the cosmetic including the silicone microparticles and the oily component as the oily gel composition. A cosmetic generally includes a combination of a variety of oily components. In the process for producing a cosmetic, if the silicone microparticles alone are added to a mixture of the oily components, then the swelling properties of the silicone microparticles manifest relative to the mixture. In contrast, even if the final oily component formulation is the same, a cosmetic having the required feelings during use can be obtained by beforehand controlling the swelling of the silicone microparticles using a portion of the oily components. In other words, by beforehand forming an oily gel composition comprising the silicone microparticles and a portion of the oily components to be included within the cosmetic, where the portion of the oily components suppresses the swelling of the silicone microparticles, swelling of the silicone microparticles can be suppressed, and by using such an oily gel composition, a cosmetic that exhibits a powdery sensation when used can be obtained. In contrast, by beforehand forming an oily gel composition comprising the silicone microparticles and those oily components that exhibit significant swelling properties, the swelling of the silicone microparticles can be enhanced, and by using such an oily gel composition, a cosmetic that exhibits a silky feel, and a cosmetic that yields a soft and elastic film can be obtained.

In the oily gel composition, the oily component is in a structured state produced by the silicone microparticles used in the present invention. The description of the oily component as being in a “structured state” means that the oily component is in a hardened state, a gelled state, a paste-like state, or simply a state of increased viscosity. In other words, due to its own weight, the oily component that exists in a structured state produced by the silicone microparticles used in the present invention does not drain from the silicone microparticles. An oily component that has been converted to a gel-like state or a paste-like state by the silicone microparticles used in the present invention exhibits increased viscosity. Further, the above description of a hardened state, a gelled state, a paste-like state, or simply a state of increased viscosity, refers to the state for a temperature at which the oily component is a liquid, although at normal temperatures the oily component may be any one of a liquid, a semi-solid or a solid. In other words, even if the oily component is a semi-solid or solid at room temperature, provided it is an oily component that can be converted to a liquid form by heating to a certain temperature, it can be converted to a hardened state, a gelled state, a paste-like state, or simply a state of increased viscosity by the silicone microparticles used in the present invention.

There are no particular restrictions on the method used for preparing the oily gel composition. If the oily component is a liquid at room temperature, then the oily gel composition can be obtained simply by stirring and mixing the silicone microparticles used in the present invention and the oily component. By performing stirring and mixing, the silicone microparticles are dispersed within the oily component as the silicone microparticles absorb the oily component, forming a state of poor fluidity, namely a state in which the oily component is in a “structured state.” Further, in those cases where an oily component that is either a semi-solid or a solid at room temperature is used, the oily gel composition can be obtained by stirring and mixing the silicone microparticles used in the present invention and the oily component at a temperature where the oily component can be converted to a liquid state. The stirring need not necessarily impart a shearing force, and need only provide sufficient force to disperse the silicone microparticles uniformly within the oily component. Examples of stirring devices that may be used include a propeller blade, flat blade, anchor mixer, planetary mixer, or kneader-extruder or the like.

The ratio between the silicone microparticles and the oily component within the oily gel composition, reported as a mass ratio, is preferably within a range from 5/95 to 90/10.

A single oily gel composition may be used alone, or two or more compositions may be used in combination. In the cosmetic of the present invention, the blend amount of the oily gel composition is preferably within a range from 1.1 to 98.1% by mass of the entire cosmetic.

[Cosmetically Acceptable Carriers]

The cosmetic of the present invention preferably further comprises a cosmetically acceptable carrier, wherein the oily gel composition is mixed with the carrier. Either a single carrier may be used alone, or two or more carriers may be used in combination. In this description, the “carrier” means aforementioned cosmetically acceptable oily components that are able to be mixed with the oily gel composition, and components that are other than the aforementioned cosmetically acceptable oily components and that are able to be mixed with the oily gel composition. Examples of these components that are other than the aforementioned cosmetically acceptable oily components and that are able to be mixed with the oily gel composition include (a) water, (b) compounds having an alcoholic hydroxyl group, (c) water-soluble or water-swellable polymer compounds, (d) particles other than the silicone microparticles, (e) hydrophilic surfactants, and other additives.

((a) Water)

The blend amount of the water of component (a) varies depending on the form of the cosmetic of the present invention, but is preferably selected appropriately from within a range from 1 to 95% by mass of the entire cosmetic.

((b) Compounds Having an Alcoholic Hydroxyl Group)

Examples of the compound having an alcoholic hydroxyl group of component (b) include lower alcohols (lower monohydric alcohols) preferably containing from 2 to 5 carbon atoms, such as ethanol and isopropanol, and sugar alcohols such as sorbitol and maltose. Additional examples include sterols such as cholesterol, sitosterol, phytosterol and lanosterol, and polyhydric alcohols such as butylene glycol, propylene glycol, dibutylene glycol and pentylene glycol. The blend amount of the component (b) is preferably selected appropriately from within a range from 0.1 to 98% by mass of the cosmetic of the present invention.

((c) Water-Soluble or Water-Swellable Polymer Compounds)

Examples of the water-soluble or water-swellable polymer compound of component (c) include plant-based polymer compounds such as gum arabic, tragacanth gum, galactan, carob gum, guar gum, karaya gum, carageenan, pectin, agar, quince seed (marmelo), starch (from rice, corn, potato or wheat and the like), algae colloids, trant gum and locust bean gum, microbe-derived polymer compounds such as xanthan gum, dextran, succinoglycan and pullulan, animal-based polymer compounds such as collagen, casein, albumin and gelatin, starch-based polymer compounds such as carboxymethyl starch and methylhydroxypropyl starch, cellulose-based polymer compounds such as methyl cellulose, ethyl cellulose, methyl hydroxypropyl cellulose, carboxymethyl cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, nitrocellulose, sodium cellulose sulfate, sodium carboxymethyl cellulose, crystalline cellulose and cellulose powders, alginic acid-based polymer compounds such as sodium alginate and propylene glycol alginic acid ester, vinyl-based polymer compounds such as polyvinyl methyl ether and carboxyvinyl polymers, polyoxyethylene-based polymer compounds, polyoxyethylene-polyoxypropylene copolymer compounds, acrylic polymer compounds such as sodium polyacrylate, polyethyl acrylate, polyacrylamide and acryloyldimethyl taurate copolymers, synthetic water-soluble polymer compounds such as polyethyleneimine and cation polymers, and inorganic water-soluble polymer compounds such as bentonite, aluminum magnesium silicate, montmorillonite, beidellite, nontronite, saponite, hectorite and anhydrous silicic acid. Examples of the component (d) also include film-forming agents such as polyvinyl alcohol and polyvinylpyrrolidone. The blend amount of the component (c) is preferably within a range from 0.1 to 25% by mass of the cosmetic of the present invention.

((d) Particles Other than the Silicone Microparticles)

Examples of the particles of component (d) include particles other than the silicone microparticles, including inorganic particles, organic particles, inorganic-organic composite powders, and silicone resin particles.

Examples of the inorganic particles include microparticles composed of titanium oxide, titanated mica, zirconium oxide, zinc oxide, cerium oxide, magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, cleaved talc, mica, kaolin, sericite, muscovite, synthetic mica, phlogopite, lepidolite, biotite, lithia mica, silicic acid, silicon dioxide, hydrous silicon dioxide, aluminum silicate, magnesium silicate, aluminum magnesium silicate, calcium silicate, barium silicate, strontium silicate, metal tungstenate salts, hydroxyapatite, vermiculite, higilite, bentonite, montmorillonite, hectorite, zeolite, ceramics, dicalcium phosphate, alumina, aluminum hydroxide, boron nitride, boron nitride or glass.

Further, examples of the inorganic particles also include pigment-based inorganic microparticles. Specific examples include inorganic red pigments such as iron oxide, iron hydroxide and iron titanate, inorganic brown pigments such as γ-iron oxide, inorganic yellow pigments such as iron oxide yellow and yellow ocher, inorganic black pigments such as iron oxide black and carbon black, inorganic violet pigments such as manganese violet and cobalt violet, inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide, and cobalt titanate, inorganic blue pigments such as Prussian blue and ultramarine blue, colored pigments such as lakes of tar-based colorants and lakes of natural dyes, and pearl pigments such as titanium oxide-coated mica, bismuth oxychloride, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, dew pearl and titanium oxide-coated colored mica.

Moreover, examples of the inorganic particles also include metal microparticles consisting of aluminum, copper, stainless steel, silver or the like.

Examples of the organic particles include powders composed of a polyamide, polyacrylic acid/acrylic acid ester, polyester, polyethylene, polypropylene, polystyrene, styrene/acrylic acid copolymer, divinylbenzene/styrene copolymer, polyurethane, vinyl resin, urea resin, melamine resin, benzoguanamine, polymethylbenzoguanamine, tetrafluoroethylene, polymethylmethacrylate (such as poly(methyl methacrylate)), cellulose, silk, nylon, phenol resin, epoxy resin or polycarbonate.

Furthermore, other examples of the organic particles include metal salt surfactant powders (metal soaps), specific examples of which include zinc stearate, aluminum stearate, calcium stearate, magnesium stearate, zinc myristate, magnesium myristate, zinc cetylphosphate, calcium cetylphosphate and zinc sodium cetylphosphate.

Examples of the organic particles further include organic colorants, and specific examples include tar colorants such as Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 505, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Yellow No. 204, Yellow No. 401, Blue No. 1, Blue No. 2, Blue No. 201, Blue No. 404, Green No. 3, Green No. 201, Green No. 204, Green No. 205, Orange No. 201, Orange No. 203, Orange No. 204, Orange No. 206 and Orange No. 207, and natural colorants such as carminic acid, laccaic acid, carthamin, brazilin and crocin.

Examples of the inorganic-organic composite powders include complex powders obtained by using a conventional method to coat the surface of an inorganic powder typically used within cosmetic products with an organic powder.

Examples of the silicone resin particles include silicone elastomer particles, polymethylsilsesquioxane particles, and particles prepared by coating the surface of silicone elastomer particles with a polymethylsilsesquioxane.

Particles that can also be used other than the silicone microparticles described above include those that have been subjected to a surface treatment using a silane or silylation agent such as a caprylsilane (AES-3083, manufactured by Shin-Etsu Chemical Co., Ltd.), a silicone oil such as a dimethylsilicone (KF-96 AK series, manufactured by Shin-Etsu Chemical Co., Ltd.), methylhydrogenpolysiloxane (such as KF-99P and KF-9901, manufactured by Shin-Etsu Chemical Co., Ltd.) or silicone-branched silicone treatment agent (such as KF-9908 and KF-9909, manufactured by Shin-Etsu Chemical Co., Ltd.), a wax, a paraffin, an organofluorine compound such as a perfluoroalkyl phosphate, a surfactant, an amino acid such as N-acylglutamic acid, or a metal soap such as aluminum stearate or magnesium myristate.

((e) Hydrophilic Surfactants)

Surfactants can be classified into nonionic, anionic, cationic and amphoteric surfactants, and examples of the hydrophilic surfactant of component (e) include the hydrophilic ones among those that can be used in the production of a water dispersion of the above silicone elastomer spherical microparticles.

(Other Additives)

Examples of other additives include antiperspirants, ultraviolet absorption and scattering agents, moisturizers, antibacterial preservatives, fragrances, salts, antioxidants, pH modifiers, chelating agents, algefacients, anti-inflammatory agents, skin beautifying components (such as whitening agents, cell activators, rough skin improvers, blood circulation promoters, skin astringents and anti-seborrheic agents), vitamins, amino acids, nucleic acids, hormones, clathrate compounds and hair-setting agents.

Examples of the antiperspirants include aluminum chlorohydrate, aluminum chloride, aluminum sesquichlorohydrate, zirconyl hydroxychloride, aluminum zirconium hydroxychloride, and aluminum zirconium glycine complex.

Examples of the ultraviolet absorption and scattering agents include particles that are capable of absorbing and scattering ultraviolet light, such as microparticulate titanium oxide, microparticulate iron-containing titanium oxide, microparticulate zinc oxide, microparticulate cerium oxide, and complexes thereof. A dispersion prepared in advance by dispersing these types of particles capable of absorbing and scattering ultraviolet light in an unctuous agent may also be used.

Examples of moisturizers include glycerol, glycerol condensates such as diglycerol, sorbitol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, glucose, xylitol, maltitol, polyethylene glycol, hyaluronan, chondroitin sulfate, pyrrolidone carboxylate, polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside, egg yolk lecithin, soybean lecithin, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylglycerol, phosphatidylinositol, and sphingophospholipid.

Examples of the antibacterial preservatives include alkyl paraoxybenzoic acid esters, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate and phenoxyethanol. Examples of antibacterial agents include benzoic acid, salicylic acid, carbolic acid, sorbic acid, alkyl paraoxybenzoic acid esters, parachlorometacresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizers and phenoxyethanol.

Examples of the fragrances include natural fragrances and synthetic fragrances. Examples of the natural fragrances include plant-based fragrances isolated from flowers, leaves, wood materials and fruit skins, and animal-based fragrances such as musk and civet. Examples of the synthetic fragrances include hydrocarbons such as monoterpenes, alcohols such as aliphatic alcohols and aromatic alcohols, aldehydes such as terpene aldehydes and aromatic aldehydes, ketones such as alicyclic ketones, esters such as terpene-based esters, lactones, phenols, oxides, nitrogen-containing compounds, and acetals.

Examples of the salts include inorganic salts, organic acid salts, amine salts and salts of amino acids. Examples of the inorganic salts include the sodium salts, potassium salts, magnesium salts, calcium salts, aluminum salts, zirconium salts and zinc salts of inorganic acid such as hydrochloric acid, sulfuric acid, carbonic acid and nitric acid. Examples of the organic acid salts include salts of organic acids such as acetic acid, dehydroacetic acid, citric acid, malic acid, succinic acid, ascorbic acid and stearic acid. Examples of the amine salts include salts of amines such as triethanolamine. Examples of the amino acid salts include salts of amino acids such as glutamic acid. Other salts that may be used include salts of hyaluronic acid and chondroitin sulfuric acid, aluminum zirconium glycine complexes, and salts produced by acid-alkaline neutralization within the cosmetic formulation.

Examples of the antioxidants include tocopherol, p-t-butylphenol, butylhydroxyanisole, dibutylhydroxytoluene and phytic acid.

Examples of the pH modifiers include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, dl-malic acid, potassium carbonate, sodium hydrogen carbonate and ammonium hydrogen carbonate.

Examples of the chelating agents include alanine, sodium ethylenediamine tetraacetate, sodium polyphosphate, sodium metaphosphate and phosphoric acid.

Examples of the algefacients include L-menthol and camphor.

Examples of the anti-inflammatory agents include allantoin, glycyrrhizinic acid and salts thereof, glycyrrhetinic acid and stearyl glycyrrhetinate, tranexamic acid and azulene.

Examples of the skin beautifying components include whitening agents such as placenta extract, arbutin, glutathione and Yukinoshita extract, cell activators such as royal jelly, photo sensitizers, cholesterol derivatives and calf blood extract, rough skin improvers, blood circulation promoters such as nonylic acid vanillylamide, benzyl nicotinic acid ester, β-butoxyethyl nicotinic acid ester, capsaicin, zingerone, cantharis tincture, ichthammol, caffeine, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine and γ-orizanol, skin astringents such as zinc oxide and tannic acid, and anti-seborrheic agents such as sulfur and thianthol.

Examples of the vitamins include A vitamins such as vitamin A oil, retinol, retinol acetate and retinol palmitate, B vitamins, including vitamin B₂ such as riboflavin, riboflavin butyrate and flavin adenine nucleotide, vitamin B₆ such as pyridoxine hydrochloride, pyridoxine dioctanoate and pyridoxine tripalmitate, vitamin B₁₂ and derivatives thereof, and vitamin B₁₅ and derivatives thereof, C vitamins such as L-ascorbic acid, L-ascorbic acid dipalmitic acid ester, sodium L-ascorbate-2-sulfate and dipotassium L-ascorbic acid diphosphoric acid ester, D vitamins such as ergocalciferol and cholecalciferol, E vitamins such as α-tocopherol, β-tocopherol, γ-tocopherol, dl-α-tocopherol acetate, dl-α-tocopherol nicotinate and dl-α-tocopherol succinate, nicotinic acids such as nicotinic acid, benzyl nicotinate and nicotinic acid amide, vitamin H, vitamin P, pantothenic acids such as calcium pantothenate, D-pantothenyl alcohol, pantothenyl ethyl ether and acetylpantothenyl ethyl ether, and biotin.

Examples of the amino acids include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, alginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine and tryptophan.

Examples of the nucleic acids include deoxyribonucleic acid.

Examples of the hormones include estradiol and ethenylestradiol.

Examples of the clathrate compounds include cyclodextrin.

Examples of the hair-setting agents include amphoteric, anionic, cationic and nonionic polymer compounds, including polyvinylpyrrolidone-based polymers such as polyvinylpyrrolidone and vinylpyrrolidone/vinyl acetate copolymers, acidic vinyl ether-based polymer compounds such as methyl vinyl ether/maleic anhydride alkyl half-ester copolymers, acidic polyvinyl acetate-based polymer compounds such as vinyl acetate/crotonic acid copolymers, acidic acrylic polymer compounds such as (meth)acrylic acid/alkyl (meth)acrylate copolymers and (meth)acrylic acid/alkyl (meth)acrylate/alkyl acrylamide copolymers, and amphoteric acrylic polymer compounds such as N-methacryloylethyl-N,N-dimethylammonium α-N-methylcarboxybetaine/alkyl (meth)acrylate copolymers and hydroxypropyl (meth)acrylate/butylaminoethyl methacrylate/octylamide acrylate copolymers. Furthermore, naturally occurring polymer compounds such as cellulose or derivatives thereof, keratin or derivatives thereof, and collagen or derivatives thereof can also be used favorably.

EXAMPLES

A more detailed description of the present invention is presented below based on a series of examples and comparative examples, although the present invention is in no way limited by these examples. In the examples, unless stated otherwise, “%” values representing concentration or content refer to “% by mass”. Furthermore, a “long-chain monovalent hydrocarbon group” refers to a monovalent hydrocarbon group of 6 to 30 carbon atoms, and an “amount of long-chain monovalent hydrocarbon groups” either refers to the proportion (mol %) of long-chain monovalent hydrocarbon groups to all the R¹ groups in the case of the organohydrogenpolysiloxane that corresponds with component (A), or refers to the proportion (mol %) of long-chain monovalent hydrocarbon groups to all the R² groups in the case of the organopolysiloxane that corresponds with component (B).

Production Example 1 Production of Silicone Microparticles-1

A glass beaker with a capacity of 1 liter was charged with 400 g of an organohydrogenpolysiloxane A1 represented by formula (3) shown below and having an amount of long-chain monovalent hydrocarbon groups of 22.2 mol % and a viscosity of 110 mm²/s, and 114 g of a methylvinylpolysiloxane B1 represented by a formula (4) shown below, containing no long-chain monovalent hydrocarbon groups and having a viscosity of 10 mm²/s (equivalent to 0.96 olefinic unsaturated groups within the methylvinylpolysiloxane B1 per SiH group within the organohydrogenpolysiloxane A1), and stirring and mixing were performed at 2,000 rpm using a homomixer. To the resulting mixed liquid were added 1.0 g of a polyoxyethylene lauryl ether (number of mols of added ethylene oxide=9 mol) and 100 g of water, and subsequent stirring at 6,000 rpm using the homomixer yielded an O/W type emulsion of increased viscosity. Stirring was continued for a further 15 minutes. Subsequently, with the stirring continued at 2,000 rpm, 382 g of water was added, yielding a uniform white emulsion. This emulsion was transferred to a glass flask with a capacity of 1 liter fitted with a stirring device having an anchor-shaped stirring blade, and following adjustment of the temperature to a value of 15 to 20° C., a mixed solution containing 1.6 g of a toluene solution of a chloroplatinic acid-olefin complex (platinum content: 0.5%), 0.6 g of a polyoxyethylene lauryl ether (number of mols of added ethylene oxide=9 mol), and 0.4 g of a polyoxyethylene lauryl ether (number of mols of added ethylene oxide=4 mol) was added to the flask under constant stirring. Stirring was then continued at the same temperature for 12 hours, thus forming a water dispersion of silicone elastomer microparticles. Inspection of the shape of these silicone elastomer microparticles under an optical microscope revealed that the particles were spherical, and measurement of the volume average particle diameter using a particle size distribution measuring apparatus “Multisizer 3” (a product name, manufactured by Beckman Coulter, Inc.) yielded a result of 12 μm.

876 g of the thus obtained water dispersion of silicone elastomer spherical microparticles was transferred to a glass flask with a capacity of 3 liters fitted with a stirring device having an anchor-shaped stirring blade, and 1,988 g of water and 57 g of 28% ammonia water were added to the flask. The pH of the liquid at this point was 11.2. Following lowering of the temperature to 5 to 10° C., a mixed solution containing 76.8 g of methyltrimethoxysilane and 2.1 g of γ-aminopropyltrimethoxysilane (amounts that yield 8.7 parts by mass of a polyorganosilsesquioxane following the hydrolysis-condensation reaction per 100 parts by mass of the silicone elastomer spherical microparticles) was added dropwise to the flask over a period of 30 minutes, and stirring was then continued for a further 1 hour. During this period, the liquid temperature was maintained at 5 to 10° C. Subsequently, the reaction mixture was heated to 55 to 60° C., and stirring was continued at this temperature for 1 hour to complete the hydrolysis-condensation reaction of the above methoxysilanes.

The obtained methoxysilane hydrolysis-condensation reaction liquid was filtration-dewatered using a pressure filtration device. The dewatered product was transferred to a stainless steel tray and dried at a temperature of 105° C. in a hot air circulating drier. The resulting dried product was crushed in a jet mill, yielding microparticles with good flowability. Inspection of these microparticles using an electron microscope revealed spherical particles, the surface of which were coated with particulate matter with a particle diameter of approximately 100 nm, confirming that silicone microparticles comprising the silicone elastomer spherical microparticles coated with a polyorganosilsesquioxane had been obtained. The thus obtained silicone microparticles were dispersed in water using a surfactant, and subsequent measurement of the volume average particle diameter using a Multisizer 3 yielded a result of 13 μm. The obtained silicone microparticles are referred to as Silicone microparticles-1.

The organohydrogenpolysiloxane A1, the methylvinylpolysiloxane B1, and the toluene solution of a chloroplatinic acid-olefin complex (platinum content: 0.5%) were mixed together in the same proportions as those used above in preparing the silicone elastomer spherical microparticles, and the resulting mixture was poured into an aluminum Petri dish in an amount sufficient to generate a thickness of 10 mm. The mixture was left to stand at 25° C. for 24 hours, and was then heated for 1 hour in a thermostatic chamber at 50° C., thus forming a non-sticky silicone elastomer. Measurement of the hardness of this silicone elastomer using an Asker C hardness meter prescribed in SRIS 0101 revealed a result of 44.

The organohydrogenpolysiloxane A1, the methylvinylpolysiloxane B1, and the toluene solution of a chloroplatinic acid-olefin complex (platinum content: 0.5%) were mixed together in the same proportions as those used above in preparing the silicone elastomer spherical microparticles, and the resulting mixture was poured onto a Teflon (a registered trademark) tray in an amount sufficient to generate a thickness of approximately 1 mm. The mixture was left to stand at 25° C. for 24 hours, and was then heated for 1 hour in a thermostatic chamber at 50° C., thus forming a silicone elastomer sheet. Test pieces were prepared by cutting the obtained sheet into square pieces with a length along one side of approximately 30 mm, and following measurement of the mass of these test pieces, each test piece was immersed for 24 hours in one of the oil substances shown in Table 1. This caused the test piece to absorb the oily substance and swell. Each test piece was then removed from the oily substance, and following removal of any oily substance on the test piece surface by wiping with a tissue, the mass of the test piece was re-measured. Table 1 lists the amounts of the oily substances absorbed (the oil absorption amounts) by the silicone elastomer sheet per 1 g of the silicone elastomer.

5.0 g of Silicone microparticles-1 and 50 g of an oily substance shown in Table 1 were placed in a 100 ml glass bottle, and after shaking for 30 minutes, the bottle was left to stand still and stored for 3 days at room temperature. A solid-liquid separation was then performed using pressure filtration, and the mass of the resulting cake-like solid fraction was measured. Table 1 lists the oil absorption amounts per 5 g of the silicone microparticles, which was calculated using the formula: [mass (g) of solid fraction following solid-liquid separation]—5.0 (g).

Production Example 2 Production of Silicone Microparticles-2

A water dispersion of silicone elastomer microparticles was obtained in the same manner as production example 1, with the exceptions of replacing the 400 g of the organohydrogenpolysiloxane A1 with 400 g of an organohydrogenpolysiloxane A2 represented by formula (5) shown below and having an amount of long-chain monovalent hydrocarbon groups of 10.5 mol % and a viscosity of 130 mm²/s, altering the amount of the methylvinylpolysiloxane B1 from 114 g to 113 g (equivalent to 0.91 olefinic unsaturated groups within the methylvinylpolysiloxane B1 per SiH group within the organohydrogenpolysiloxane A2), and altering the amount of water added immediately prior to obtaining the uniform white emulsion from 382 g to 383 g. Inspection of the shape of these silicone elastomer microparticles in the same manner as production example 1 revealed spherical particles, and measurement of the volume average particle diameter of the silicone elastomer microparticles in the same manner as production example 1 yielded a result of 12 μm.

Using 876 g of the obtained water dispersion of silicone elastomer spherical microparticles as a raw material, a hydrolysis-condensation reaction and a subsequent dewatering were conducted in the same manner as production example 1, thus forming microparticles with good flowability. During this process, the pH of the liquid upon addition of the 1,988 g of water and 57 g of 28% ammonia water was 11.2, and the amount of the polyorganosilsesquioxane following the hydrolysis-condensation reaction was 8.7 parts by mass per 100 parts by mass of the silicone elastomer spherical microparticles. Inspection of the obtained microparticles using an electron microscope revealed spherical particles, the surface of which were coated with particulate matter with a particle diameter of approximately 100 nm, confirming that silicone microparticles comprising the silicone elastomer spherical microparticles coated with a polyorganosilsesquioxane had been obtained. Dispersing the thus obtained silicone microparticles in water and subsequent measurement of the volume average particle diameter were conducted in the same manner as production example 1, yielding a result of 12 μm. The obtained silicone microparticles are referred to as Silicone microparticles-2.

With the exception of using the organohydrogenpolysiloxane A2 instead of the organohydrogenpolysiloxane A1, a non-sticky silicone elastomer was obtained in the same manner as production example 1. Measurement of the hardness of this silicone elastomer using an Asker C hardness meter prescribed in SRIS 0101 yielded a result of 53.

With the exception of using the organohydrogenpolysiloxane A2 instead of the organohydrogenpolysiloxane A1, preparation of a silicone elastomer sheet and measurement of the oil absorption amounts for the sheet were conducted in the same manner as production example 1. The oil absorption amounts listed in Table 1 represent absorption amounts per 1 g of the silicone elastomer.

The oil absorption amounts for 5.0 g of Silicone microparticles-2 were measured in the same manner as production example 1. Table 1 lists the oil absorption amounts, which were calculated using the formula: [mass (g) of solid fraction following solid-liquid separation]—5.0 (g).

Comparative Production Example Production of Silicone Microparticles-3

A glass beaker with a capacity of 1 liter was charged with 19 g of a methylhydrogenpolysiloxane A3 represented by formula (6) shown below, containing no long-chain monovalent hydrocarbon groups and having a viscosity of 30 mm²/s, and 500 g of a methylvinylpolysiloxane B2 represented by a formula (7) shown below, containing no long-chain monovalent hydrocarbon groups and having a viscosity of 580 mm²/s (equivalent to 0.95 olefinic unsaturated groups within the methylvinylpolysiloxane B2 per SiH group within the methylhydrogenpolysiloxane A3), and stirring and mixing were performed at 2,000 rpm using a homomixer. To the resulting mixed liquid were added 1.2 g of a polyoxyethylene lauryl ether (number of mols of added ethylene oxide=9 mol) and 100 g of water, and subsequent stirring at 6,000 rpm using the homomixer yielded an O/W type emulsion of increased viscosity. Stirring was continued for a further 15 minutes. Subsequently, with the stirring continued at 2,000 rpm, 377 g of water was added, yielding a uniform white emulsion. This emulsion was transferred to a glass flask with a capacity of 1 liter fitted with a stirring device having an anchor-shaped stirring blade, and following adjustment of the temperature to a value of 15 to 20° C., a mixed solution containing 0.8 g of a toluene solution of a chloroplatinic acid-olefin complex (platinum content: 0.5%) and 1.8 g of a polyoxyethylene lauryl ether (number of mols of added ethylene oxide=9 mol) was added to the flask under constant stirring. Stirring was then continued at the same temperature for 12 hours, thus forming a water dispersion of silicone elastomer microparticles. Inspection of the shape of these silicone elastomer microparticles under an optical microscope revealed that the particles were spherical, and measurement of the volume average particle diameter using a Multisizer 3 yielded a result of 12 μm.

1,155 g of the thus obtained water dispersion of silicone elastomer spherical microparticles was transferred to a glass flask with a capacity of 3 liters fitted with a stirring device having an anchor-shaped stirring blade, and 1,734 g of water and 60 g of 28% ammonia water were added to the flask. The pH of the liquid at this point was 11.3. Following lowering of the temperature to 5 to 10° C., 50.7 g of methyltrimethoxysilane (an amount that yields 4.2 parts by mass of a polymethylsilsesquioxane following the hydrolysis and condensation reaction per 100 parts by mass of the silicone elastomer spherical microparticles) was added dropwise to the flask over a period of 20 minutes, and stirring was then continued for a further 1 hour. During this period, the liquid temperature was maintained at 5 to 10° C. Subsequently, the reaction mixture was heated to 55 to 60° C., and stirring was continued at this temperature for 1 hour to complete the hydrolysis-condensation reaction of the above methyltrimethoxysilane.

The thus obtained methyltrimethoxysilane hydrolysis-condensation reaction liquid was dewatered in the same manner as production example 1, yielding microparticles with good flowability. Inspection of these microparticles using an electron microscope revealed spherical particles, the surface of which were coated with particulate matter with a particle diameter of approximately 100 nm, confirming that silicone microparticles comprising the silicone elastomer spherical microparticles coated with a polyorganosilsesquioxane had been obtained. Dispersing the thus obtained silicone microparticles in water and subsequent measurement of the volume average particle diameter were conducted in the same manner as production example 1, yielding a result of 12 μm. The obtained silicone microparticles are referred to as Silicone microparticles-3.

With the exceptions of using the organohydrogenpolysiloxane A3 instead of the organohydrogenpolysiloxane A1, and using the methylvinylpolysiloxane B2 instead of the methylvinylpolysiloxane B1, a non-sticky silicone elastomer was obtained in the same manner as production example 1. Measurement of the hardness of this silicone elastomer using an Asker C hardness meter prescribed in SRIS 0101 yielded a result of 55.

With the exceptions of using the organohydrogenpolysiloxane A3 instead of the organohydrogenpolysiloxane A1, and using the methylvinylpolysiloxane B2 instead of the methylvinylpolysiloxane B1, preparation of a silicone elastomer sheet and measurement of the oil absorption amounts for the sheet were conducted in the same manner as production example 1. The oil absorption amounts listed in Table 1 represent absorption amounts per 1 g of the silicone elastomer.

The oil absorption amounts for 5.0 g of Production of Silicone microparticles-3 were measured in the same manner as production example 1. Table 1 lists the oil absorption amounts, which were calculated using the formula: [mass (g) of solid fraction following solid-liquid separation]—5.0 (g).

TABLE 1 Oil absorption amounts Comparative Production Production production Item example 1 example 2 example Silicone elastomer Squalane* 1.6 0.7 0.1 or less oil absorption amounts Liquid paraffin 0.7 0.4 0.1 or less [g/1 g of silicone elastomer] Octyl palmitate 1.5 0.7 0.2 Isocetyl myristate 1.1 0.6 0.1 or less Isocetyl isostearate 1.0 0.5 0.1 or less Silicone microparticles Squalane* 15 10 5 oil absorption amounts Liquid paraffin 10 8 5 [g/5 g of microparticles] Octyl palmitate 11 7 2 Isocetyl myristate 7 6 4 Isocetyl isostearate 7 6 4 *The evaluations were conducted using squalane instead of sebum.

From the results in Table 1 it has been evident that the silicone microparticles used in the present invention exhibited excellent properties for absorption of a variety of oily substances.

Examples 1 to 22 and Comparative Examples 1 to 11 Oily Gel Compositions

Using Silicone microparticles-1 obtained in the above production example 1, Silicone microparticles-2 obtained in the above production example 2, and Silicone microparticles-3 obtained in the above comparative production example, oily gel compositions were prepared with the composition ratios (% by mass) listed in Tables 2 to 4 respectively, and were then evaluated using the evaluation criteria shown in Table 5. The evaluation results are recorded in Table 6.

<Composition Ratios>

TABLE 2 Oily gel composition comprising Silicone microparticles-1 Example No. Component 1 2 3 4 5 6 7 8 9 10 11 1 Silicone microparticles-1 25 25 25 25 40 20 20 30 30 30 50 2 Decamethylcyclopentasiloxane 75 3 Methyl trimethicone 75 4 Octamethyltrisiloxane 75 5 Dimethylpolysiloxane 75 (viscosity: 2 mm²/s) 6 Dimethylpolysiloxane 60 (viscosity: 6 mm²/s) 7 Isododecane 80 8 Isohexadecane 80 9 Squalane 70 10 Liquid isoparaffin 70 11 Isononyl isononanoate 70 12 Octyl p-methoxycinnamate 50

In the table, the numerical values represent composition ratios (% by mass).

TABLE 3 Oily gel composition comprising Silicone microparticles-2 Example No. Component 12 13 14 15 16 17 18 19 20 21 22 1 Silicone microparticles-2 25 25 25 25 40 20 20 30 30 30 50 2 Decamethylcyclopentasiloxane 75 3 Methyl trimethicone 75 4 Octamethyltrisiloxane 75 5 Dimethylpolysiloxane 75 (viscosity: 2 mm²/s) 6 Dimethylpolysiloxane 60 (viscosity: 6 mm²/s) 7 Isododecane 80 8 Isohexadecane 80 9 Squalane 70 10 Liquid isoparaffin 70 11 Isononyl isononanoate 70 12 Octyl p-methoxycinnamate 50

In the table, the numerical values represent composition ratios (% by mass).

TABLE 4 Oily gel composition or oily ungelled composition comprising Silicone microparticles-3 Comparative example No. Component 1 2 3 4 5 6 7 8 9 10 11 1 Silicone microparticles-3 25 25 25 25 40 20 20 30 30 30 50 2 Decamethylcyclopentasiloxane 75 3 Methyl trimethicone 75 4 Octamethyltrisiloxane 75 5 Dimethylpolysiloxane 75 (viscosity: 2 mm²/s) 6 Dimethylpolysiloxane 60 (viscosity: 6 mm²/s) 7 Isododecane 80 8 Isohexadecane 80 9 Squalane 70 10 Liquid isoparaffin 70 11 Isononyl isononanoate 70 12 Octyl p-methoxycinnamate 50

<Criteria for Evaluating Usability>

Each of the oily gel compositions and oily ungelled compositions was applied to the skin and evaluated for spreadability (malleability and ductility), oily film feeling (adhesion) and the state of powderiness (evaluated only for those compositions comprising a volatile oily component; the powdery sensation following evaporation of the oily component) by 10 panelists using the criteria outlined below in Table 5. The average number obtained was rated in accordance with the following criteria. The results are listed in Table 6.

TABLE 5 Evaluation item Spreadability Oily film feeling Powderiness 5 points Good Nonsticky Did not whiten 4 points Slightly good Almost nonsticky 3 points Fair Fair Whitened slightly 2 points Slightly poor Slightly sticky 1 point  Poor Sticky Whitened

Rating of Average Number of Points:

Obtained average number of points of 4.5 points or higher: OO

Obtained average number of points of at least 3.5 points but less than 4.5 points: O

Obtained average number of points of at least 2.5 points but less than 3.5 points: Δ

Obtained average number of points of at least 1.5 points but less than 2.5 points: X

Obtained average number of points of less than 1.5 points: XX

TABLE 6 Rating Rating Rating Spread- Oily Spread- Oily Comparative Spread- Oily Example ability film Powderiness Example ability film Powderiness example ability film Powderiness 1 ◯◯ ◯◯ ◯ 12 ◯◯ ◯◯ ◯ 1 Δ ◯ ◯ 2 ◯◯ ◯◯ ◯ 13 ◯◯ ◯◯ ◯ 2 Δ ◯ ◯ 3 ◯◯ ◯◯ ◯ 14 ◯◯ ◯◯ ◯ 3 Δ ◯ ◯ 4 ◯◯ ◯◯ ◯◯ 15 ◯◯ ◯◯ ◯◯ 4 Δ ◯ ◯◯ 5 ◯◯ ◯◯ — 16 ◯◯ ◯◯ — 5 Δ ◯ — 6 ◯◯ ◯◯ ◯◯ 17 ◯◯ ◯◯ ◯◯ 6 ◯◯ ◯◯ XX 7 ◯◯ ◯◯ ◯◯ 18 ◯◯ ◯◯ ◯◯ 7 ◯◯ ◯◯ X 8 ◯◯ ◯ — 19 ◯◯ ◯ — 8 ◯ XX — 9 ◯◯ ◯ — 20 ◯◯ ◯ — 9 ◯ XX — 10 ◯◯ ◯◯ — 21 ◯◯ ◯◯ — 10 ◯ X — 11 ◯◯ ◯◯ — 22 ◯◯ ◯◯ — 11 ◯ Δ —

As is evident from Table 6, the compositions of examples 1 to 5 and examples 12 to 16 exhibited superior spreadability and minimal stickiness when compared with the compositions of comparative examples 1 to 5. Further, the compositions of examples 6, 7, 17 and 18 differed from the compositions of comparative examples 6 and 7 in that following evaporation of the oily component, an excellent finish was obtained with no powderiness. The compositions of examples 8 to 11 and 19 to 22 exhibited superior spreadability and minimal stickiness of the oily component when compared with the compositions of comparative examples 8 to 11, and were clearly superior.

Examples 23 and 24, and Comparative Example 12 Skincare Creams

Using Silicone microparticles-1 obtained in the above production example 1, Silicone microparticles-2 obtained in the above production example 2, and Silicone microparticles-3 obtained in the above comparative production example, skincare creams were prepared with the composition ratios (% by mass) listed in Table 7 below.

<Formulations>

TABLE 7 Comparative Example example Component Composition (% by mass) 23 24 12 1 Silicone microparticles-1 5.0 — — 2 Silicone microparticles-2 — 5.0 — 3 Silicone microparticles-3 — — 5.0 4 Crosslinked polyether-modified silicone (note 1) 3.0 3.0 3.0 5 Crosslinked dimethylpolysiloxane (note 2) 9.0 9.0 9.0 6 Crosslinked dimethylpolysiloxane (note 3) 22.0 22.0 22.0 7 Polyether-modified branched silicone (note 4) 1.0 1.0 1.0 8 Decamethylcyclopentasiloxane 25.0 25.0 25.0 9 Liquid isoparaffin 3.0 3.0 3.0 10 1,3-butylene glycol 3.0 3.0 3.0 11 Sodium citrate 0.2 0.2 0.2 12 Sodium chloride 0.5 0.5 0.5 13 Purified water 28.3 28.3 28.3 (note 1) Crosslinked polyether-modified silicone: KSG-210 (manufactured by Shin-Etsu Chemical Co., Ltd.) (note 2) Crosslinked dimethylpolysiloxane: KSG-15 (manufactured by Shin-Etsu Chemical Co., Ltd.) (note 3) Crosslinked dimethylpolysiloxane: KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.) (note 4) Polyether-modified branched silicone: KF-6028 (manufactured by Shin-Etsu Chemical Co., Ltd.)

<Preparation of Cosmetics>

The components 1 to 9 were stirred and mixed in a beaker. To the resulting mixture was added a solution obtained separately by dissolving the components 10 to 12 in the component 13, and stirring was then continued to complete preparation of a skincare cream. The obtained skincare cream was subjected to the evaluations described below.

<Evaluation of Usability and Feeling During Use>

Each skincare cream was applied to the skin and evaluated for spreadability (malleability and ductility), skin affinity (adhesion and homogeneity) and residual oily film feeling on the skin (sensation following application) by 20 female panelists using the criteria outlined below in Table 8. The average number obtained was rated in accordance with the following criteria. The results are listed in Table 9.

TABLE 8 Residual oily film Evaluation item Spreadability Skin affinity feeling on skin 5 points Light Good Silky 4 points Slightly light Slightly good Slightly silky 3 points Fair Fair Fair 2 points Slightly heavy Slightly poor Slightly slimy 1 point  Heavy Poor Slimy

Rating of Average Number of Points:

Obtained average number of points of 4.5 points or higher: OO

Obtained average number of points of at least 3.5 points but less than 4.5 points: O

Obtained average number of points of at least 2.5 points but less than 3.5 points: Δ

Obtained average number of points of at least 1.5 points but less than 2.5 points: X

Obtained average number of points of less than 1.5 points: XX

TABLE 9 Example Comparative example Item 23 24 12 Spreadability ◯◯ ◯◯ XX Skin affinity ◯◯ ◯◯ ◯◯ Residual oily film feeling on skin ◯◯ ◯◯ X

As is evident from Table 9, it was demonstrated that the skincare creams of examples 23 and 24 exhibited superior levels of usability compared with the skincare cream of comparative example 12. In other words, it was clear that by including the silicone microparticles used in the present invention, a cosmetic could be obtained that exhibited no stickiness upon application, had excellent spreadability and adhesion, and left no unpleasant residual oily film feeling on the skin following application.

Example 25 Powder Foundation

Components mass (%)

-   1. Liquid paraffin 2.0 -   2. Squalane 2.0 -   3. Dimethylpolysiloxane (viscosity: 20 mm²/s) 3.0 -   4. Polyethylene 1.5 -   5. Methylhydrogenpolysiloxane-treated mica 40.0 -   6. Barium sulfate 5.0 -   7. Metal soap-treated titanium oxide 9.0 -   8. Silicone microparticles-1 6.0 -   9. Methylhydrogenpolysiloxane-treated talc 31.5 -   10. Triethoxysilylethyl polydimethylsiloxyethyl hexyl dimethicone     (note 1)-treated iron oxide pigment appropriate amount

(Note 1) Triethoxysilylethyl polydimethylsiloxyethyl hexyl dimethicone: KF-9909 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 4 to 10 were placed in a Henschel mixer and mixed thoroughly. B: Components 1 to 3 were heated and dissolved, and the resulting solution was added to the mixture obtained in A and mixed thoroughly. C: The resulting mixture was crushed using a hammer mill, and press-molded into a predetermined aluminum pan, yielding a powder foundation.

The powder foundation obtained in this manner was confirmed as having a fine texture, ready spreadability, and no stickiness or greasiness, as well as offering excellent cosmetic retention properties.

Example 26 Oil-in-Water Cream

-   1. Crosslinked dimethylpolysiloxane (note 1) 10.0 -   2. Glyceryl trioctanoate 5.0 -   3. Silicone microparticles-2 1.0 -   4. Dipropylene glycol 7.0 -   5. Glycerol 5.0 -   6. Methyl cellulose (2% aqueous solution) (note 2) 7.0 -   7. Polyacrylamide-based emulsifier (note 3) 2.0 -   8. Preservative appropriate amount -   9. Fragrance appropriate amount -   10. Pure water remainder

(Note 1) Crosslinked dimethylpolysiloxane: KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Methyl cellulose: Metolose SM-4000 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Polyacrylamide-based emulsifier: Sepigel 305 (manufactured by Seppic Corporation)

(Production Method)

A: Components 4 to 10 were mixed. B: Components 1 to 3 were mixed, and the resulting mixture was added to the mixture obtained in A and then stirred and emulsified.

The oil-in-water cream obtained in this manner was confirmed as having a fine texture, ready spreadability, and no stickiness or greasiness, as well as offering excellent stability, with no change upon temperature variation and no change over time.

Example 27 Water-in-Oil Cream

Components mass (%)

-   1. Dimethylpolysiloxane (viscosity: 6 mm²/s) 6.0 -   2. Methylphenylpolysiloxane 4.0 -   3. Neopentyl glycol dioctanoate 3.0 -   4. Polyether-modified silicone (note 1) 3.0 -   5. The gel composition of example 87.0 -   6. Glycerol 10.0 -   7. Preservative appropriate amount -   8. Fragrance appropriate amount -   9. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6012 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 5 were mixed uniformly. B: Components 6, 7 and 9 were mixed and dissolved. C: Under constant stirring, the mixture obtained in B was added to the mixture obtained in A, and following emulsification, the component 8 was added to complete preparation of a cream.

The water-in-oil cream obtained in this manner was confirmed as having a fine texture, ready spreadability, and no stickiness or greasiness, as well as offering excellent stability, with no change upon temperature variation and no change over time.

Example 28 Water-in-Oil Cream

Components mass (%)

-   1. Alkyl-modified crosslinked polyether-modified silicone (note 1)     6.0 -   2. Liquid paraffin 8.5 -   3. Macadamia nut oil 5.0 -   4. Alkylsilicone/polyether-comodified silicone (note 2) 0.5 -   5. Hybrid silicone complex powder (note 3) 3.0 -   6. The gel composition of example 97.0 -   7. Sodium citrate 0.2 -   8. Propylene glycol 8.0 -   9. Glycerol 3.0 -   10. Preservative appropriate amount -   11. Fragrance appropriate amount -   12. Pure water remainder

(Note 1) Alkyl-modified crosslinked polyether-modified silicone: KSG-310 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Alkylsilicone/polyether-comodified silicone: KF-6038 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Hybrid silicone complex powder: KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 6 were mixed. B: Components 7 to 10 and component 12 were mixed and dissolved. C: Under constant stirring, the mixture obtained in B was added to the mixture obtained in A, and following emulsification, the component 11 was added to complete preparation of a cream.

The water-in-oil cream obtained in this manner was confirmed as having a fine texture, ready spreadability, and no stickiness or greasiness, as well as offering excellent stability, with no change upon temperature variation and no change over time.

Example 29 Water-in-Oil Cream

Components mass (%)

-   1. Decamethylcyclopentasiloxane 10.5 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 4.0 -   3. Polyether-modified silicone (note 1) 5.0 -   4. POE (5) octyl dodecyl ether 1.0 -   5. Polyoxyethylene sorbitan monostearate (20 E.O.) 0.5 -   6. The gel composition of example 1215.0 -   7. Liquid paraffin 2.0 -   8. Macadamia nut oil 1.0 -   9. Scutellaria Baicalensis root extract (note 2) 1.0 -   10. Gentiana extract (note 3) 0.5 -   11. Ethanol 5.0 -   12. 1,3-butylene glycol 2.0 -   13. Preservative appropriate amount -   14. Fragrance appropriate amount -   15. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Scutellaria Baicalensis root extract: 50% extract in 1,3-butylene glycol water

(Note 3) Gentiana extract: 20% extract in ethanol water

(Production Method)

A: Components 1 to 8 were mixed and dispersed uniformly. B: Components 9 to 13 and component 15 were mixed, and the mixture obtained in A was then added and emulsified. C: Component 14 was added to the emulsion obtained in B to complete preparation of a cream.

The water-in-oil cream obtained in this manner was confirmed as not only having a fine texture and no stickiness, but also offering excellent spreadability and adhesion, and exhibiting extremely superior cosmetic retention. Further, the cream also exhibited excellent stability, with no change by temperature and no change over time.

Example 30 Eye Liner

Components mass (%)

-   1. Decamethylcyclopentasiloxane 39.0 -   2. Polyether-modified silicone (note 1) 3.0 -   3. Organic silicone resin (note 2) 15.0 -   4. Dioctadecyldimethylammonium salt-modified montmorillonite 3.0 -   5. Methylhydrogenpolysiloxane-treated iron oxide black 8.0 -   6. Silicone microparticles-1 2.0 -   7. 1,3-butylene glycol 5.0 -   8. Sodium dehydroacetate appropriate amount -   9. Preservative appropriate amount -   10. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Organic silicone resin: KF-7312J (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 4 were mixed, and components 5 and 6 were then added and dispersed uniformly. B: Components 7 to 10 were mixed. C: The mixture obtained in B was added gradually to the mixture obtained in A and emulsified, thus completing preparation of an eye liner.

The eye liner obtained in this manner was readily spread and easy to draw, yielded a cool and fresh sensation, and exhibited superior feelings during use with no stickiness. Further, the eye liner also exhibited excellent usability and stability, with no change upon temperature variation and no change over time, exhibited excellent water resistance and sweat resistance, and also offered extremely favorable cosmetic retention.

Example 31 Foundation

Components mass (%)

-   1. Decamethylcyclopentasiloxane 45.0 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 15.0 -   3. Polyether-modified silicone (note 1) 3.5 -   4. Octadecyldimethylbenzylammonium salt-modified montmorillonite 1.5 -   5. Silicone microparticles-1 4.5 -   6. Amino acid (N-acylglutamic acid)-treated iron oxide 2.5 -   7. Triethoxysilylethyl polydimethylsiloxyethyl hexyl dimethicone     (note 2)-treated titanium oxide 7.5 -   8. Dipropylene glycol 5.0 -   9. Methyl paraoxybenzoic acid ester 0.3 -   10. Fragrance appropriate amount -   11. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Triethoxysilylethyl polydimethylsiloxyethyl hexyl dimethicone: KF-9909 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 4 were mixed, and components 5 to 7 were added and mixed uniformly. B: Components 8, 9 and 11 were dissolved. C: Under constant stirring, the mixture obtained in B was added to the mixture obtained in A, and following emulsification, the component 10 was added to complete preparation of a foundation.

The foundation obtained in this manner was confirmed as having a fine texture, ready spreadability, no stickiness or greasiness, and favorable cosmetic retention, as well as offering excellent stability, with no change upon temperature variation and no change over time.

Example 32 Eye Shadow

Components mass (%)

-   1. Decamethylcyclopentasiloxane 15.0 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 10.0 -   3. Polyether-modified branched silicone (note 1) 2.0 -   4. PEG (10) lauryl ether 0.5 -   5. Silicone microparticles-2 6.0 -   6. Methylhydrogenpolysiloxane-treated inorganic coloring pigment     appropriate amount -   7. Sodium chloride 2.0 -   8. Propylene glycol 8.0 -   9. Preservative appropriate amount -   10. Fragrance appropriate amount -   11. Pure water remainder

(Note 1) Polyether-modified branched silicone: KF-6028 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 4 were mixed, and components 5 and 6 were added and dispersed uniformly. B: Components 7 to 9 and component 11 were dissolved uniformly. C: Under constant stirring, the mixture obtained in B was added to the mixture obtained in A, and following emulsification, the component 10 was added to complete preparation of an eye shadow.

The eye shadow obtained in this manner exhibited ready spreadability and favorable feelings during use, with no greasiness or powderiness. Further, the water resistance, water repellency and sweat resistance were good, retention was favorable with good resistance to cosmetic breakdown, and the eye shadow also exhibited excellent stability, with no change upon temperature variation and no change over time.

Example 33 Lipstick

Components mass (%)

-   1. Candelilla wax 8.0 -   2. Polyethylene wax 8.0 -   3. Long-chain alkyl-containing acrylic silicone resin (note 1) 12.0 -   4. Methylphenylpolysiloxane (note 2) 3.0 -   5. Isotridecyl isononanoate 15.5 -   6. Glyceryl isostearate 16.0 -   7. Polyglyceryl triisostearate 28.5 -   8. The gel composition of example 106.0 -   9. Organic pigment appropriate amount -   10. Fragrance appropriate amount

(Note 1) Long-chain alkyl-containing acrylic silicone resin: KP-561P (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Methylphenylpolysiloxane: KF-54 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 6 and a portion of component 7 were mixed and dissolved under heat. B: Components 8 and 9 and the remainder of component 7 were mixed uniformly, and the resulting mixture was added to the mixture obtained in A and dispersed uniformly. C: The component 10 was added to the mixture obtained in B to complete preparation of a lipstick.

The lipstick obtained in this manner exhibited ready spreadability, suffered no greasiness or powderiness, exhibited favorable water resistance and water repellency, offered good cosmetic retention, and also exhibited excellent stability.

Example 34 Eye Liner

Components mass (%)

-   1. Decamethylcyclopentasiloxane 6.0 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 5.0 -   3. Jojoba oil 2.0 -   4. Polyether-modified silicone (note 1) 1.0 -   5. Alkylsilicone/polyether-comodified silicone (note 2) 1.0 -   6. Acrylic silicone resin (note 3) 15.0 -   7. Silicone microparticles-1 2.0 -   8. Methylhydrogenpolysiloxane-treated iron oxide black 18.0 -   9. Ethanol 5.0 -   10. Preservative appropriate amount -   11. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Alkylsilicone/polyether-comodified silicone: KF-6038 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Acrylic silicone resin: KP-545 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 6 were mixed, and components 7 and 8 were then added and dispersed uniformly. B: Components 9 to 11 were stirred and dissolved. C: Under constant stirring, the mixture obtained in B was added to the mixture obtained in A and emulsified, thus completing preparation of an eye liner.

The eye liner obtained in this manner was readily spread, suffered no greasiness or powderiness, exhibited favorable water resistance, water repellency and sweat resistance, offered good cosmetic retention, and was resistant to cosmetic breakdown. Further, the eye liner was also confirmed as having excellent stability, with no change upon temperature variation and no change over time.

Example 35 Liquid Emulsified Foundation

Components mass (%)

-   1. Dimethylpolysiloxane (viscosity: 6 mm²/s) 4.5 -   2. Decamethylcyclopentasiloxane 10.0 -   3. Neopentyl glycol dioctanoate 3.0 -   4. Isostearic acid diglyceride 2.0 -   5. α-monoisostearyl glyceryl ether 1.0 -   6. Polyether-modified silicone (note 1) 1.0 -   7. Alkylsilicone/polyether-comodified silicone (note 2) 0.5 -   8. Aluminum distearate 0.2 -   9. The gel composition from example 88.0 -   10. The gel composition from example 69.0 -   11. Methylhydrogenpolysiloxane-treated iron oxide pigment     appropriate amount -   12. Glycerol 3.0 -   13. Preservative appropriate amount -   13. Fragrance appropriate amount -   14. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Alkylsilicone/polyether-comodified silicone: KF-6038 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 8 were mixed under heat, and components 9 to 11 were then added and dispersed uniformly. B: Components 12, 13 and 15 were heated and dissolved. C: Under constant stirring, the mixture obtained in B was added to the mixture obtained in A and emulsified, and following cooling, the component 14 was added to complete preparation of a liquid emulsified foundation.

The liquid emulsified foundation obtained in this manner was confirmed as having a low viscosity and fine texture, ready spreadability with no stickiness or greasiness, and a favorable skin corrective effect, as well as offering favorable cosmetic retention and excellent stability, with no change upon temperature variation and no change over time.

Example 36 Liquid Foundation

Components mass (%)

-   1. Decamethylcyclopentasiloxane 16.0 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 8.0 -   3. 12-hydroxystearic acid 1.0 -   4. Fluorine-modified silicone (note 1) 15.0 -   5. Fluoroalkyl/polyether-comodified silicone (note 2) 5.0 -   6. Spherical polymethylsilsesquioxane powder (note 3) 1.0 -   7. The gel composition of example 116.0 -   8. Silicone microparticles of comparative production example 3.0 -   9. Amino acid (N-acylglutamic acid)-treated iron oxide pigment     appropriate amount -   10. Ethanol 15.0 -   11. Glycerol 3.0 -   12. Magnesium sulfate 1.0 -   13. Preservative appropriate amount -   14. Fragrance appropriate amount -   15. Pure water remainder

(Note 1) Fluorine-modified silicone: FL-50 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Fluoroalkyl/polyether-comodified silicone: FPD-4694 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Spherical polymethylsilsesquioxane powder: KMP-590 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 6 to 9 were mixed together uniformly. B: Components 1 to 5 were mixed under heating at 70° C., and the mixture obtained in A was then added and dispersed uniformly. C: Components 10 to 13 and component 15 were heated to 40° C., the mixture obtained in B was added and emulsified, and following cooling, the component 14 was added to complete preparation of a liquid foundation.

The liquid foundation obtained in this manner was confirmed as suffering no stickiness, having favorable spreadability, and offering excellent stability, with no change upon temperature variation and no change over time.

Example 37 Eye Liner

Components mass (%)

-   1. Decamethylcyclopentasiloxane 22.0 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 2.0 -   3. Methylhydrogenpolysiloxane-treated iron oxide black 20.0 -   4. The gel composition of example 164.0 -   5. Organic silicone resin (note 1) 10.0 -   6. Vitamin E acetate 0.2 -   7. Jojoba oil 2.0 -   8. Bentonite 3.0 -   9. Polyether-modified silicone (note 2) 2.0 -   10. Ethanol 3.0 -   11. 1,3-butylene glycol 5.0 -   12. Preservative appropriate amount -   13. Pure water remainder

(Note 1) Organic silicone resin: KF-7312J (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1, 2 and 5 to 9 were mixed, and components 3 and 4 were then added and dispersed uniformly. B: Components 10 to 13 were mixed. C: Under constant stirring, the mixture obtained in B was added gradually to the mixture obtained in A and emulsified, thus completing preparation of an eye liner.

The eye liner obtained in this manner was readily spread and easy to draw, yielded a cool and fresh sensation, exhibited superior feelings during use with no stickiness, offered excellent water resistance and sweat resistance, and also provided excellent cosmetic retention. Further, the eye liner suffered no change by temperature and no change over time.

Example 38 Foundation

Components mass (%)

-   1. Decamethylcyclopentasiloxane 15.0 -   2. Methylphenylpolysiloxane 3.0 -   3. Glyceryl trioctanoate 10.0 -   4. Polyether-modified silicone (note 1) 4.0 -   5. Polyglyceryl monoisostearate 3.0 -   6. The gel composition of example 115.0 -   7. Aluminum stearate-treated titanium oxide 6.0 -   8. Methylhydrogenpolysiloxane-treated iron oxide pigment appropriate     amount -   9. 1,3-butylene glycol 7.0 -   10. Sodium chloride 0.5 -   11. Preservative appropriate amount -   12. Fragrance appropriate amount -   13. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6017 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 5 were mixed and dissolved, and components 6 to 8 were then dispersed uniformly therein. B: Components 9 to 11 and component 13 were mixed and then added to the mixture obtained in A and emulsified. C: Component 12 was added to the mixture obtained in B to complete preparation of a foundation.

The foundation obtained in this manner was confirmed as having no stickiness, ready spreadability, an excellent feeling of adhesion and superior retention. Further, the foundation also exhibited excellent stability, with no change by temperature and no change over time.

Example 39 Water-in-Oil Antiperspirant

Components mass (%)

-   1. Crosslinked polyether-modified silicone (note 1) 7.0 -   2. Decamethylcyclopentasiloxane 10.0 -   3. Glyceryl trioctanoate 7.0 -   4. Dipropylene glycol 5.0 -   5. Sodium citrate 0.2 -   6. Aluminum zirconium tetrachlorohydrate 18.0 -   7. Silicone microparticles-2 5.0 -   8. Phenyl-modified hybrid silicone complex powder (note 2) 2.0 -   9. Fragrance appropriate amount -   10. Pure water 45.8

(Note 1) Crosslinked polyether-modified silicone: KSG-210 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Phenyl-modified hybrid silicone complex powder: KSP-300 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 3 were mixed. B: Components 4 to 10 were mixed. C: The mixture obtained in B was added to the mixture obtained in A, and the resulting mixture was emulsified.

The water-in-oil antiperspirant obtained in this manner exhibited good spreadability and no stickiness or oily feeling, and also displayed extremely superior usability and stability, with no change by temperature and no change over time.

Example 40 Roll-on Antiperspirant

Components mass (%)

-   1. Crosslinked polyether-modified silicone (note 1) 20.0 -   2. Dimethylpolysiloxane (viscosity: 6 mm²/s) 10.0 -   3. Crosslinked dimethylpolysiloxane (note 2) 15.0 -   4. Decamethylcyclopentasiloxane 15.0 -   5. Aluminum zirconium tetrachlorohydrate 20.0 -   6. The gel composition of example 1220.0 -   7. Fragrance appropriate amount

(Note 1) Crosslinked polyether-modified silicone: KSG-210 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Crosslinked dimethylpolysiloxane: KSG-15 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 4 were mixed. B: Components 5 to 7 were added to the mixture obtained in A and dispersed uniformly.

The roll-on antiperspirant obtained in this manner exhibited good spreadability and no stickiness or oily feeling, and also displayed extremely superior usability and stability, with no change by temperature and no change over time.

Example 41 Sunblock Lotion

Components mass (%)

-   1. Decamethylcyclopentasiloxane 20.0 -   2. Methylphenylpolysiloxane 3.0 -   3. Sorbitan monoisostearate 1.0 -   4. Polyether-modified silicone (note 1) 0.5 -   5. Trimethylsiloxysilicate (note 2) 1.0 -   6. The gel composition of example 226.0 -   7. Aluminum stearate-treated titanium oxide microparticles 6.0 -   8. Sorbitol 2.0 -   9. Sodium chloride 2.0 -   10. Preservative appropriate amount -   11. Fragrance appropriate amount -   12. Pure water remainder

(Note 1) Polyether-modified silicone: KF-6015 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Trimethylsiloxysilicate: X-21-5250 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 5 were mixed under heat, and components 6 and 7 were then dispersed uniformly therein. B: Components 8 to 10 and component 12 were mixed under heat. C: Under constant stirring, the mixture obtained in B was added gradually to the mixture obtained in A and emulsified, and following cooling, component 11 was added to complete the preparation of a sunblock lotion.

The sunblock lotion obtained in this manner had a fine texture, exhibited ready spreadability, and suffered no stickiness. Moreover, the cosmetic retention was good, meaning the ultraviolet blocking effect was favorably retained, and the lotion also exhibited excellent stability, with no change upon temperature variation and no change over time.

Example 42 Sunblock Cream

Components mass (%)

-   1. Decamethylcyclopentasiloxane 11.5 -   2. Acrylic silicone resin (note 1) 12.0 -   3. Glyceryl trioctanoate 5.0 -   4. Octyl paramethoxycinnamate 6.0 -   5. Crosslinked polyether-modified silicone (note 2) 5.0 -   6. Alkylsilicone/polyether-comodified silicone (note 3) 2.5 -   7. The gel composition of example 18.0 -   8. Aluminum stearate-treated titanium oxide microparticles 15.0 -   9. Sodium chloride 0.5 -   10. 1,3-butylene glycol 2.0 -   11. Preservative appropriate amount -   12. Fragrance appropriate amount -   13. Pure water remainder

(Note 1) Acrylic silicone resin: KP-545 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Crosslinked polyether-modified silicone: KSG-210 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Alkylsilicone/polyether-comodified silicone: KF-6038 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Component 2 was added to a portion of component 1 and mixed uniformly, and component 8 was then added and dispersed using a beads mill. B: The remainder of component 1 and components 3 to 7 were mixed together uniformly. C: Components 9 to 11 and component 13 were mixed and dissolved. D: The mixture obtained in C was added to the mixture obtained in B and emulsified, the mixture obtained in A was then added and dispersed, and component 12 was then added to complete preparation of a sunblock cream.

The sunblock cream obtained in this manner suffered no stickiness, exhibited good spreadability and an excellent feeling of adhesion, displayed a skin corrective effect, and also exhibited excellent cosmetic retention. Further, the cream was also confirmed as having excellent stability, with no change upon temperature variation and no change over time.

Example 43 Nail Enamel

Components mass (%)

-   1. Acrylic silicone resin (note 1) 45.0 -   2. Methyl trimethicone (note 2) 5.0 -   3. Nitrocellulose 3.0 -   4. Camphor 0.5 -   5. Acetyltributyl citrate 1.0 -   6. Dimethyldistearylammonium hectorite 0.5 -   7. Butyl acetate 30.0 -   8. Ethyl acetate 10.0 -   9. Isopropyl alcohol 5.0 -   10. Silicone microparticles-2 appropriate amount

(Note 1) Acrylic silicone resin: KP-549 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Methyl trimethicone: TMF-1.5 (manufactured by Shin-Etsu Chemical (Production Method)

A: Components 7 to 9 were mixed, and components 4 to 6 were then added and mixed uniformly therein. B: Components 1 to 3 were added to the mixture obtained in A and mixed thoroughly. C: Component 10 was added to the mixture obtained in B, yielding a nail enamel.

The nail enamel obtained in this manner exhibited ready spreadability, produced a smooth look, exhibited favorable water resistance, oil resistance and retention, and displayed excellent stability, with no sensation of pressure on the nails, no yellowing of the nails, and no change in the cosmetic film by temperature or over time.

Example 44 Cheek Colorant

Components mass (%)

-   1. Crosslinked dimethylpolysiloxane (note 1) 28.0 -   2. Decamethylcyclopentasiloxane 34.5 -   3. Neopentyl glycol dioctanoate 9.0 -   4. Stearoyl inulin 10.0 -   5. Silicone microparticles-1 2.0 -   6. Red No. 202 appropriate amount -   7. Alkylsilicone branched silicone (note 2)-treated iron oxide     appropriate amount -   8. Alkylsilicone branched silicone (note 2)-treated titanium oxide     appropriate amount -   9. Tocopherol appropriate amount -   10. Alkylsilicone branched silicone (note 2)-treated titanated mica     5.0 -   11. Alkylsilicone branched silicone (note 2)-treated sericite 11.5

(Note 1) Crosslinked dimethylpolysiloxane: KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Alkylsilicone branched silicone: KF-9909 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: Components 1 to 5 were mixed and heated to 80° C. to achieve a uniform dispersion. B: Components 6 to 11 were added to the mixture obtained in A, and the resulting mixture was heated to 80° C. to obtain a uniform dispersion. C: The mixture obtained in B was cooled to room temperature, yielding a cheek colorant.

The cheek colorant obtained in this manner was sponge-like, was readily picked up, exhibited good spreadability, and displayed favorable feelings upon use, with no greasiness or powderiness. Further, the water resistance, water repellency and sweat resistance were favorable, retention was good, and the colorant was resistant to cosmetic breakdown and exhibited excellent stability, with no change upon temperature variation and no change over time.

Example 45 Eye Colorant

Components mass (%)

-   1. Isotridecyl isononanoate 20.0 -   2. Squalane 20.0 -   3. Silicone microparticles-1 6.0 -   4. Dextrin palmitate 10.0 -   5. Crosslinked dimethylpolysiloxane (note 1) 12.0 -   6. Barium sulfate 5.0 -   7. Polyethylene terephthalate/A1 powder 4.5 -   8. Alkylsilicone branched silicone (note 2)-treated titanated mica     13.5 -   9. Tocopherol appropriate amount -   10. Cosmetic glass flakes powder (note 3) 1.5 -   11. Cosmetic iron oxide-coated glass flakes powder (note 4) 7.5

(Note 1) Crosslinked dimethylpolysiloxane: KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Alkylsilicone branched silicone: KF-9909 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Cosmetic glass flakes powder: Glass flakes (manufactured by NSG Group)

(Note 4) Cosmetic iron oxide-coated glass flakes powder: Metashine (manufactured by NSG Group)

(Production Method)

A: Components 1 to 5 were mixed and heated to 90° C. to achieve a uniform dispersion. B: Components 6 to 11 were added to the mixture obtained in A, and the resulting mixture was heated to 90° C. to obtain a uniform dispersion. C: The mixture obtained in B was cooled to room temperature, yielding an eye colorant.

The eye colorant obtained in this manner was jelly-like, was readily picked up, exhibited good spreadability, and displayed favorable feelings upon use, with no greasiness or powderiness. Further, the water resistance, water repellency and sweat resistance were favorable, retention was good, and the colorant was resistant to cosmetic breakdown and exhibited excellent stability, with no change upon temperature variation and no change over time.

Example 46 Foundation

Components mass (%)

-   1. Dimethylpolysiloxane (viscosity: 6 mm²/s) 23.0 -   2. Organic silicone resin (note 1) 10.0 -   3. Alkylsilicone branched-crosslinked dimethylpolysiloxane (note 2)     30.0 -   4. Silicone microparticles-1 8.0 -   5. Squalane 1.0 -   6. Jojoba oil 1.0 -   7. Diphenylsiloxyphenyl trimethicone (note 3) 1.0 -   8. PMMA spherical powder 2.0 -   9. Alkylsilicone branched silicone (note 4)-treated iron oxide     appropriate amount -   10. Alkylsilicone branched silicone (note 4)-treated titanium oxide     6.0 -   11. Aluminum stearate-treated titanium oxide microparticles 10.0 -   12. Tocopherol appropriate amount -   13. Alkylsilicone branched silicone (note 4)-treated talc 3.0 -   14. Alkylsilicone branched silicone (note 4)-treated sericite 5.0

(Note 1) Organic silicone resin: KF-7312L (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Alkylsilicone branched-crosslinked dimethylpolysiloxane: KSG-048Z (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Diphenylsiloxyphenyl trimethicone: KF-56A (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 4) Alkylsilicone branched silicone: KF-9909 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Production Method)

A: A portion of component 1 and components 2 to 8 were mixed and dispersed uniformly. B: Using components 9 to 14 and the remainder of component 1, a roll mill was used to form a uniform dispersion. C: The mixture obtained in B was dispersed uniformly within the mixture obtained in A to complete preparation of a foundation.

The foundation obtained in this manner was souffle-like, was readily picked up, exhibited good spreadability, and displayed favorable feelings upon use, with no greasiness or powderiness. Further, the water resistance, water repellency and sweat resistance were favorable, retention was good, and the foundation was resistant to cosmetic breakdown and exhibited excellent stability, with no change upon temperature variation and no change over time. 

1. A cosmetic comprising silicone microparticles, wherein the silicone microparticles comprise 100 parts by mass of silicone elastomer spherical microparticles having a volume average particle diameter within a range from 0.1 to 100 μm, and 0.5 to 25 parts by mass of a polyorganosilsesquioxane that coats a surface of the silicone elastomer spherical microparticles, and the silicone elastomer is capable of absorbing not less than 30 parts by mass of at least one oily substance selected from the group consisting of sebum, hydrocarbon oils and ester oils per 100 parts by mass of the silicone elastomer.
 2. The cosmetic according to claim 1, wherein the silicone elastomer is a cured product of a liquid silicone composition comprising: (A) (A1) an organohydrogenpolysiloxane having two hydrogen atoms bonded to silicon atoms within each molecule, represented by an average composition formula (1) shown below: R¹ _(a)H_(b)SiO_((4-a-b)/2)  (1)  wherein R¹ represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 30 carbon atoms excluding aliphatic unsaturated groups, and a and b are positive numbers that satisfy 0<a<3, 0<b≦3, and 0.1≦a+b≦3, (A2) an organohydrogenpolysiloxane represented by the average composition formula (1) and having at least three hydrogen atoms bonded to silicon atoms within each molecule, or a combination of component (A1) and component (A2), (B) (B1) an organopolysiloxane having two monovalent olefinic unsaturated groups within each molecule, represented by an average composition formula (2) shown below: R² _(c)R³ _(d)SiO_((4-c-d)/2)  (2)  wherein R² represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 30 carbon atoms excluding aliphatic unsaturated groups, R³ represents a monovalent olefinic unsaturated group of 2 to 6 carbon atoms, and c and d are positive numbers that satisfy 0<c<3, 0<d≦3, and 0.1≦c+d≦3, (B2) an organopolysiloxane represented by the average composition formula (2) and having at least three monovalent olefinic unsaturated groups within each molecule, or a combination of component (B1) and component (B2), in an amount that yields from 0.5 to 2 monovalent olefinic unsaturated groups within component (B) per hydrogen atom bonded to a silicon atom within component (A), and (C) a platinum group metal-based catalyst, wherein from 5 to 70 mol % of at least one of R¹ and R² are monovalent hydrocarbon groups of 6 to 30 carbon atoms, provided that when component (A) is component (A1), component (B) is either component (B2) or a combination of component (B1) and component (B2).
 3. The cosmetic according to claim 1, wherein the polyorganosilsesquioxane comprises an alkyl group that is substituted with an unsubstituted or substituted amino group.
 4. The cosmetic according to claim 1, wherein the silicone microparticles are obtained by a production method comprising: hydrolyzing and condensing an organotrialkoxysilane in a water medium, in presence of silicone elastomer spherical microparticles having a volume average particle diameter within a range from 0.1 to 100 μm and an alkaline material, thereby coating a surface of the silicone elastomer spherical microparticles with a polyorganosilsesquioxane, wherein the silicone elastomer is capable of absorbing not less than 30 parts by mass of at least one oily substance selected from the group consisting of sebum, hydrocarbon oils and ester oils per 100 parts by mass of the silicone elastomer.
 5. The cosmetic according to claim 1, further comprising a cosmetically acceptable oily component.
 6. The cosmetic according to claim 5, wherein the oily component is at least one selected from the group consisting of hydrocarbon oils, higher alcohols, ethers, ester oils, glyceride oils, natural plant oils, fluorine-containing unctuous agents, ultraviolet absorbers, lipophilic surfactants, silicone oils, silicone resins, silicone waxes and oily gelling agents.
 7. The cosmetic according to claim 5, wherein the silicone microparticles and the oily component are included as an oily gel composition that comprises the silicone microparticles and the oily component.
 8. The cosmetic according to claim 7, further comprising a cosmetically acceptable carrier, wherein the oily gel composition is mixed with the carrier. 